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Finding the Fourth Proportional to 515,747.72, 773,620.48 and 291,006.20

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Solution

The fourth proportional to 515,747.72, 773,620.48 and 291,006.20 is: 436,508.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,747.72 : 773,620.48 = 291,006.20 : x
  2. Step 2: Convert to fraction form
    515,747.72/773,620.48 = 291,006.20/x
  3. Step 3: Cross multiply
    515,747.72x = 773,620.48 × 291,006.20
  4. Step 4: Simplify right side
    515,747.72x = 225,128,356,126.98
  5. Step 5: Solve for x
    x = 225,128,356,126.98/515,747.72
  6. Step 6: Final answer
    x = 436,508.68

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1.5x scale

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.