Home / 718,129.80-1,077,194.70-418,948.20

Finding the Fourth Proportional to 718,129.80, 1,077,194.70 and 418,948.20

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Solution

The fourth proportional to 718,129.80, 1,077,194.70 and 418,948.20 is: 628,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,129.80 : 1,077,194.70 = 418,948.20 : x
  2. Step 2: Convert to fraction form
    718,129.80/1,077,194.70 = 418,948.20/x
  3. Step 3: Cross multiply
    718,129.80x = 1,077,194.70 × 418,948.20
  4. Step 4: Simplify right side
    718,129.80x = 451,288,780,614.54
  5. Step 5: Solve for x
    x = 451,288,780,614.54/718,129.80
  6. Step 6: Final answer
    x = 628,422.30

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1.5x scale

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.