Home / 989,129.60-1,479,757.80-857,472.20

Finding the Fourth Proportional to 989,129.60, 1,479,757.80 and 857,472.20

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Solution

The fourth proportional to 989,129.60, 1,479,757.80 and 857,472.20 is: 1,282,795.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,129.60 : 1,479,757.80 = 857,472.20 : x
  2. Step 2: Convert to fraction form
    989,129.60/1,479,757.80 = 857,472.20/x
  3. Step 3: Cross multiply
    989,129.60x = 1,479,757.80 × 857,472.20
  4. Step 4: Simplify right side
    989,129.60x = 1,268,851,176,233.16
  5. Step 5: Solve for x
    x = 1,268,851,176,233.16/989,129.60
  6. Step 6: Final answer
    x = 1,282,795.68

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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.