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Finding the Fourth Proportional to 615,601.60, 921,301.80 and 515,874.40

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Solution

The fourth proportional to 615,601.60, 921,301.80 and 515,874.40 is: 772,051.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,601.60 : 921,301.80 = 515,874.40 : x
  2. Step 2: Convert to fraction form
    615,601.60/921,301.80 = 515,874.40/x
  3. Step 3: Cross multiply
    615,601.60x = 921,301.80 × 515,874.40
  4. Step 4: Simplify right side
    615,601.60x = 475,276,013,293.92
  5. Step 5: Solve for x
    x = 475,276,013,293.92/615,601.60
  6. Step 6: Final answer
    x = 772,051.30

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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.