Home / 718,942.52-992,134.02-396,655.40

Finding the Fourth Proportional to 718,942.52, 992,134.02 and 396,655.40

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Solution

The fourth proportional to 718,942.52, 992,134.02 and 396,655.40 is: 547,380.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,942.52 : 992,134.02 = 396,655.40 : x
  2. Step 2: Convert to fraction form
    718,942.52/992,134.02 = 396,655.40/x
  3. Step 3: Cross multiply
    718,942.52x = 992,134.02 × 396,655.40
  4. Step 4: Simplify right side
    718,942.52x = 393,535,316,556.71
  5. Step 5: Solve for x
    x = 393,535,316,556.71/718,942.52
  6. Step 6: Final answer
    x = 547,380.78

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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.