Home / 925,310.80-1,387,966.20-715,099.60

Finding the Fourth Proportional to 925,310.80, 1,387,966.20 and 715,099.60

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Solution

The fourth proportional to 925,310.80, 1,387,966.20 and 715,099.60 is: 1,072,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,310.80 : 1,387,966.20 = 715,099.60 : x
  2. Step 2: Convert to fraction form
    925,310.80/1,387,966.20 = 715,099.60/x
  3. Step 3: Cross multiply
    925,310.80x = 1,387,966.20 × 715,099.60
  4. Step 4: Simplify right side
    925,310.80x = 992,534,074,433.52
  5. Step 5: Solve for x
    x = 992,534,074,433.52/925,310.80
  6. Step 6: Final answer
    x = 1,072,649.40

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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.