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Finding the Fourth Proportional to 521,006.94, 719,019.90 and 291,562.29

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Solution

The fourth proportional to 521,006.94, 719,019.90 and 291,562.29 is: 402,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,006.94 : 719,019.90 = 291,562.29 : x
  2. Step 2: Convert to fraction form
    521,006.94/719,019.90 = 291,562.29/x
  3. Step 3: Cross multiply
    521,006.94x = 719,019.90 × 291,562.29
  4. Step 4: Simplify right side
    521,006.94x = 209,639,088,599.57
  5. Step 5: Solve for x
    x = 209,639,088,599.57/521,006.94
  6. Step 6: Final answer
    x = 402,372.93

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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.