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Finding the Fourth Proportional to 615,279.60, 922,919.40 and 577,881.90

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Solution

The fourth proportional to 615,279.60, 922,919.40 and 577,881.90 is: 866,822.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,279.60 : 922,919.40 = 577,881.90 : x
  2. Step 2: Convert to fraction form
    615,279.60/922,919.40 = 577,881.90/x
  3. Step 3: Cross multiply
    615,279.60x = 922,919.40 × 577,881.90
  4. Step 4: Simplify right side
    615,279.60x = 533,338,416,418.86
  5. Step 5: Solve for x
    x = 533,338,416,418.86/615,279.60
  6. Step 6: Final answer
    x = 866,822.85

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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.