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Finding the Fourth Proportional to 438,029.70, 657,044.55 and 396,039.30

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Solution

The fourth proportional to 438,029.70, 657,044.55 and 396,039.30 is: 594,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,029.70 : 657,044.55 = 396,039.30 : x
  2. Step 2: Convert to fraction form
    438,029.70/657,044.55 = 396,039.30/x
  3. Step 3: Cross multiply
    438,029.70x = 657,044.55 × 396,039.30
  4. Step 4: Simplify right side
    438,029.70x = 260,215,463,650.82
  5. Step 5: Solve for x
    x = 260,215,463,650.82/438,029.70
  6. Step 6: Final answer
    x = 594,058.95

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Similar ratio
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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.