Home / 718,818.14-991,975.20-396,539.30

Finding the Fourth Proportional to 718,818.14, 991,975.20 and 396,539.30

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Solution

The fourth proportional to 718,818.14, 991,975.20 and 396,539.30 is: 547,227.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,818.14 : 991,975.20 = 396,539.30 : x
  2. Step 2: Convert to fraction form
    718,818.14/991,975.20 = 396,539.30/x
  3. Step 3: Cross multiply
    718,818.14x = 991,975.20 × 396,539.30
  4. Step 4: Simplify right side
    718,818.14x = 393,357,151,425.36
  5. Step 5: Solve for x
    x = 393,357,151,425.36/718,818.14
  6. Step 6: Final answer
    x = 547,227.64

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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.