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Finding the Fourth Proportional to 615,931.60, 921,823.80 and 566,165.20

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Solution

The fourth proportional to 615,931.60, 921,823.80 and 566,165.20 is: 847,341.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,931.60 : 921,823.80 = 566,165.20 : x
  2. Step 2: Convert to fraction form
    615,931.60/921,823.80 = 566,165.20/x
  3. Step 3: Cross multiply
    615,931.60x = 921,823.80 × 566,165.20
  4. Step 4: Simplify right side
    615,931.60x = 521,904,556,091.76
  5. Step 5: Solve for x
    x = 521,904,556,091.76/615,931.60
  6. Step 6: Final answer
    x = 847,341.74

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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.