Home / 766,146.60-1,057,120.47-443,837.61

Finding the Fourth Proportional to 766,146.60, 1,057,120.47 and 443,837.61

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Solution

The fourth proportional to 766,146.60, 1,057,120.47 and 443,837.61 is: 612,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,146.60 : 1,057,120.47 = 443,837.61 : x
  2. Step 2: Convert to fraction form
    766,146.60/1,057,120.47 = 443,837.61/x
  3. Step 3: Cross multiply
    766,146.60x = 1,057,120.47 × 443,837.61
  4. Step 4: Simplify right side
    766,146.60x = 469,189,822,886.88
  5. Step 5: Solve for x
    x = 469,189,822,886.88/766,146.60
  6. Step 6: Final answer
    x = 612,402.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.