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Finding the Fourth Proportional to 478,627.98, 717,944.31 and 123,617.40

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Solution

The fourth proportional to 478,627.98, 717,944.31 and 123,617.40 is: 185,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,627.98 : 717,944.31 = 123,617.40 : x
  2. Step 2: Convert to fraction form
    478,627.98/717,944.31 = 123,617.40/x
  3. Step 3: Cross multiply
    478,627.98x = 717,944.31 × 123,617.40
  4. Step 4: Simplify right side
    478,627.98x = 88,750,408,946.99
  5. Step 5: Solve for x
    x = 88,750,408,946.99/478,627.98
  6. Step 6: Final answer
    x = 185,426.70

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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.