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Finding the Fourth Proportional to 515,490.98, 772,847.64 and 338,042.66

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Solution

The fourth proportional to 515,490.98, 772,847.64 and 338,042.66 is: 506,809.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,490.98 : 772,847.64 = 338,042.66 : x
  2. Step 2: Convert to fraction form
    515,490.98/772,847.64 = 338,042.66/x
  3. Step 3: Cross multiply
    515,490.98x = 772,847.64 × 338,042.66
  4. Step 4: Simplify right side
    515,490.98x = 261,255,472,000.32
  5. Step 5: Solve for x
    x = 261,255,472,000.32/515,490.98
  6. Step 6: Final answer
    x = 506,809.01

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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.