Home / 714,321.12-985,760.28-392,036.52

Finding the Fourth Proportional to 714,321.12, 985,760.28 and 392,036.52

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Solution

The fourth proportional to 714,321.12, 985,760.28 and 392,036.52 is: 541,008.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,321.12 : 985,760.28 = 392,036.52 : x
  2. Step 2: Convert to fraction form
    714,321.12/985,760.28 = 392,036.52/x
  3. Step 3: Cross multiply
    714,321.12x = 985,760.28 × 392,036.52
  4. Step 4: Simplify right side
    714,321.12x = 386,454,029,725.43
  5. Step 5: Solve for x
    x = 386,454,029,725.43/714,321.12
  6. Step 6: Final answer
    x = 541,008.82

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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.