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Finding the Fourth Proportional to 627,539.60, 940,726.20 and 437,999.60

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Solution

The fourth proportional to 627,539.60, 940,726.20 and 437,999.60 is: 656,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,539.60 : 940,726.20 = 437,999.60 : x
  2. Step 2: Convert to fraction form
    627,539.60/940,726.20 = 437,999.60/x
  3. Step 3: Cross multiply
    627,539.60x = 940,726.20 × 437,999.60
  4. Step 4: Simplify right side
    627,539.60x = 412,037,699,309.52
  5. Step 5: Solve for x
    x = 412,037,699,309.52/627,539.60
  6. Step 6: Final answer
    x = 656,592.35

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1.5x scale

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.