Home / 1,171,311,518.15-1,616,439,639.42-642,675,364.10

Finding the Fourth Proportional to 1,171,311,518.15, 1,616,439,639.42 and 642,675,364.10

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Solution

The fourth proportional to 1,171,311,518.15, 1,616,439,639.42 and 642,675,364.10 is: 886,908,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,311,518.15 : 1,616,439,639.42 = 642,675,364.10 : x
  2. Step 2: Convert to fraction form
    1,171,311,518.15/1,616,439,639.42 = 642,675,364.10/x
  3. Step 3: Cross multiply
    1,171,311,518.15x = 1,616,439,639.42 × 642,675,364.10
  4. Step 4: Simplify right side
    1,171,311,518.15x = 1,038,845,933,807,900,672
  5. Step 5: Solve for x
    x = 1,038,845,933,807,900,672/1,171,311,518.15
  6. Step 6: Final answer
    x = 886,908,322.60

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Double scale
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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.