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Finding the Fourth Proportional to 438,102.80, 658,536.60 and 404,925.20

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Solution

The fourth proportional to 438,102.80, 658,536.60 and 404,925.20 is: 608,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,102.80 : 658,536.60 = 404,925.20 : x
  2. Step 2: Convert to fraction form
    438,102.80/658,536.60 = 404,925.20/x
  3. Step 3: Cross multiply
    438,102.80x = 658,536.60 × 404,925.20
  4. Step 4: Simplify right side
    438,102.80x = 266,658,064,462.32
  5. Step 5: Solve for x
    x = 266,658,064,462.32/438,102.80
  6. Step 6: Final answer
    x = 608,665.51

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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.