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Finding the Fourth Proportional to 506,866.04, 699,399.88 and 307,851.68

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Solution

The fourth proportional to 506,866.04, 699,399.88 and 307,851.68 is: 424,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,866.04 : 699,399.88 = 307,851.68 : x
  2. Step 2: Convert to fraction form
    506,866.04/699,399.88 = 307,851.68/x
  3. Step 3: Cross multiply
    506,866.04x = 699,399.88 × 307,851.68
  4. Step 4: Simplify right side
    506,866.04x = 215,311,428,049.80
  5. Step 5: Solve for x
    x = 215,311,428,049.80/506,866.04
  6. Step 6: Final answer
    x = 424,789.61

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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.