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Finding the Fourth Proportional to 719,399.65, 992,535.75 and 512,700.61

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Solution

The fourth proportional to 719,399.65, 992,535.75 and 512,700.61 is: 707,358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,399.65 : 992,535.75 = 512,700.61 : x
  2. Step 2: Convert to fraction form
    719,399.65/992,535.75 = 512,700.61/x
  3. Step 3: Cross multiply
    719,399.65x = 992,535.75 × 512,700.61
  4. Step 4: Simplify right side
    719,399.65x = 508,873,684,471.81
  5. Step 5: Solve for x
    x = 508,873,684,471.81/719,399.65
  6. Step 6: Final answer
    x = 707,358.82

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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.