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Finding the Fourth Proportional to 521,489.45, 719,595.95 and 292,014.83

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Solution

The fourth proportional to 521,489.45, 719,595.95 and 292,014.83 is: 402,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,489.45 : 719,595.95 = 292,014.83 : x
  2. Step 2: Convert to fraction form
    521,489.45/719,595.95 = 292,014.83/x
  3. Step 3: Cross multiply
    521,489.45x = 719,595.95 × 292,014.83
  4. Step 4: Simplify right side
    521,489.45x = 210,132,689,007.94
  5. Step 5: Solve for x
    x = 210,132,689,007.94/521,489.45
  6. Step 6: Final answer
    x = 402,947.15

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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.