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Finding the Fourth Proportional to 520,904.80, 781,702.80 and 296,264.80

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Solution

The fourth proportional to 520,904.80, 781,702.80 and 296,264.80 is: 444,593.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,904.80 : 781,702.80 = 296,264.80 : x
  2. Step 2: Convert to fraction form
    520,904.80/781,702.80 = 296,264.80/x
  3. Step 3: Cross multiply
    520,904.80x = 781,702.80 × 296,264.80
  4. Step 4: Simplify right side
    520,904.80x = 231,591,023,701.44
  5. Step 5: Solve for x
    x = 231,591,023,701.44/520,904.80
  6. Step 6: Final answer
    x = 444,593.76

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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.