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Finding the Fourth Proportional to 545,237.70, 817,856.55 and 520,743.30

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Solution

The fourth proportional to 545,237.70, 817,856.55 and 520,743.30 is: 781,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,237.70 : 817,856.55 = 520,743.30 : x
  2. Step 2: Convert to fraction form
    545,237.70/817,856.55 = 520,743.30/x
  3. Step 3: Cross multiply
    545,237.70x = 817,856.55 × 520,743.30
  4. Step 4: Simplify right side
    545,237.70x = 425,893,318,773.62
  5. Step 5: Solve for x
    x = 425,893,318,773.62/545,237.70
  6. Step 6: Final answer
    x = 781,114.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.