Home / 661,030.12-990,007.32-642,847.24

Finding the Fourth Proportional to 661,030.12, 990,007.32 and 642,847.24

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Solution

The fourth proportional to 661,030.12, 990,007.32 and 642,847.24 is: 962,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,030.12 : 990,007.32 = 642,847.24 : x
  2. Step 2: Convert to fraction form
    661,030.12/990,007.32 = 642,847.24/x
  3. Step 3: Cross multiply
    661,030.12x = 990,007.32 × 642,847.24
  4. Step 4: Simplify right side
    661,030.12x = 636,423,473,241.80
  5. Step 5: Solve for x
    x = 636,423,473,241.80/661,030.12
  6. Step 6: Final answer
    x = 962,775.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.