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Finding the Fourth Proportional to 438,467.60, 657,701.40 and 413,973.20

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Solution

The fourth proportional to 438,467.60, 657,701.40 and 413,973.20 is: 620,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,467.60 : 657,701.40 = 413,973.20 : x
  2. Step 2: Convert to fraction form
    438,467.60/657,701.40 = 413,973.20/x
  3. Step 3: Cross multiply
    438,467.60x = 657,701.40 × 413,973.20
  4. Step 4: Simplify right side
    438,467.60x = 272,270,753,202.48
  5. Step 5: Solve for x
    x = 272,270,753,202.48/438,467.60
  6. Step 6: Final answer
    x = 620,959.80

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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.