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Finding the Fourth Proportional to 520,902.10, 779,279.55 and 451,551.70

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Solution

The fourth proportional to 520,902.10, 779,279.55 and 451,551.70 is: 675,530.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,902.10 : 779,279.55 = 451,551.70 : x
  2. Step 2: Convert to fraction form
    520,902.10/779,279.55 = 451,551.70/x
  3. Step 3: Cross multiply
    520,902.10x = 779,279.55 × 451,551.70
  4. Step 4: Simplify right side
    520,902.10x = 351,885,005,577.74
  5. Step 5: Solve for x
    x = 351,885,005,577.74/520,902.10
  6. Step 6: Final answer
    x = 675,530.02

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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.