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Finding the Fourth Proportional to 627,859.80, 942,308.10 and 291,418.20

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Solution

The fourth proportional to 627,859.80, 942,308.10 and 291,418.20 is: 437,367.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,859.80 : 942,308.10 = 291,418.20 : x
  2. Step 2: Convert to fraction form
    627,859.80/942,308.10 = 291,418.20/x
  3. Step 3: Cross multiply
    627,859.80x = 942,308.10 × 291,418.20
  4. Step 4: Simplify right side
    627,859.80x = 274,605,730,347.42
  5. Step 5: Solve for x
    x = 274,605,730,347.42/627,859.80
  6. Step 6: Final answer
    x = 437,367.91

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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.