Home / 718,171.92-991,080.50-395,875.08

Finding the Fourth Proportional to 718,171.92, 991,080.50 and 395,875.08

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Solution

The fourth proportional to 718,171.92, 991,080.50 and 395,875.08 is: 546,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,171.92 : 991,080.50 = 395,875.08 : x
  2. Step 2: Convert to fraction form
    718,171.92/991,080.50 = 395,875.08/x
  3. Step 3: Cross multiply
    718,171.92x = 991,080.50 × 395,875.08
  4. Step 4: Simplify right side
    718,171.92x = 392,344,070,244.57
  5. Step 5: Solve for x
    x = 392,344,070,244.57/718,171.92
  6. Step 6: Final answer
    x = 546,309.40

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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.