Home / 1,030,311,974.69-1,421,701,346.45-696,510,806.21

Finding the Fourth Proportional to 1,030,311,974.69, 1,421,701,346.45 and 696,510,806.21

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Solution

The fourth proportional to 1,030,311,974.69, 1,421,701,346.45 and 696,510,806.21 is: 961,097,585.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,311,974.69 : 1,421,701,346.45 = 696,510,806.21 : x
  2. Step 2: Convert to fraction form
    1,030,311,974.69/1,421,701,346.45 = 696,510,806.21/x
  3. Step 3: Cross multiply
    1,030,311,974.69x = 1,421,701,346.45 × 696,510,806.21
  4. Step 4: Simplify right side
    1,030,311,974.69x = 990,230,351,002,249,472
  5. Step 5: Solve for x
    x = 990,230,351,002,249,472/1,030,311,974.69
  6. Step 6: Final answer
    x = 961,097,585.32

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Half scale
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Double scale
Find fourth proportional to 1,030,311,975.69, 1,421,701,347.82 and 696,510,807.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.