Home / 1,330,098.40-1,995,439.20-431,387.20

Finding the Fourth Proportional to 1,330,098.40, 1,995,439.20 and 431,387.20

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Solution

The fourth proportional to 1,330,098.40, 1,995,439.20 and 431,387.20 is: 647,175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,098.40 : 1,995,439.20 = 431,387.20 : x
  2. Step 2: Convert to fraction form
    1,330,098.40/1,995,439.20 = 431,387.20/x
  3. Step 3: Cross multiply
    1,330,098.40x = 1,995,439.20 × 431,387.20
  4. Step 4: Simplify right side
    1,330,098.40x = 860,806,929,258.24
  5. Step 5: Solve for x
    x = 860,806,929,258.24/1,330,098.40
  6. Step 6: Final answer
    x = 647,175.37

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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.