Home / 640,553.28-961,646.40-522,455.04

Finding the Fourth Proportional to 640,553.28, 961,646.40 and 522,455.04

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Solution

The fourth proportional to 640,553.28, 961,646.40 and 522,455.04 is: 784,348.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,553.28 : 961,646.40 = 522,455.04 : x
  2. Step 2: Convert to fraction form
    640,553.28/961,646.40 = 522,455.04/x
  3. Step 3: Cross multiply
    640,553.28x = 961,646.40 × 522,455.04
  4. Step 4: Simplify right side
    640,553.28x = 502,417,008,377.86
  5. Step 5: Solve for x
    x = 502,417,008,377.86/640,553.28
  6. Step 6: Final answer
    x = 784,348.51

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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.