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Finding the Fourth Proportional to 521,359.24, 719,308.54 and 291,882.78

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Solution

The fourth proportional to 521,359.24, 719,308.54 and 291,882.78 is: 402,704.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,359.24 : 719,308.54 = 291,882.78 : x
  2. Step 2: Convert to fraction form
    521,359.24/719,308.54 = 291,882.78/x
  3. Step 3: Cross multiply
    521,359.24x = 719,308.54 × 291,882.78
  4. Step 4: Simplify right side
    521,359.24x = 209,953,776,332.94
  5. Step 5: Solve for x
    x = 209,953,776,332.94/521,359.24
  6. Step 6: Final answer
    x = 402,704.62

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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.