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Finding the Fourth Proportional to 991,374, 1,487,058.08 and 281,402.64

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Solution

The fourth proportional to 991,374, 1,487,058.08 and 281,402.64 is: 422,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,374 : 1,487,058.08 = 281,402.64 : x
  2. Step 2: Convert to fraction form
    991,374/1,487,058.08 = 281,402.64/x
  3. Step 3: Cross multiply
    991,374x = 1,487,058.08 × 281,402.64
  4. Step 4: Simplify right side
    991,374x = 418,462,069,545.33
  5. Step 5: Solve for x
    x = 418,462,069,545.33/991,374
  6. Step 6: Final answer
    x = 422,103.13

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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.