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Finding the Fourth Proportional to 520,898.40, 781,347.60 and 456,616.80

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Solution

The fourth proportional to 520,898.40, 781,347.60 and 456,616.80 is: 684,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,898.40 : 781,347.60 = 456,616.80 : x
  2. Step 2: Convert to fraction form
    520,898.40/781,347.60 = 456,616.80/x
  3. Step 3: Cross multiply
    520,898.40x = 781,347.60 × 456,616.80
  4. Step 4: Simplify right side
    520,898.40x = 356,776,440,799.68
  5. Step 5: Solve for x
    x = 356,776,440,799.68/520,898.40
  6. Step 6: Final answer
    x = 684,925.20

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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.