Home / 431,376,008.60-647,064,012.90-140,242,568.60

Finding the Fourth Proportional to 431,376,008.60, 647,064,012.90 and 140,242,568.60

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Solution

The fourth proportional to 431,376,008.60, 647,064,012.90 and 140,242,568.60 is: 210,363,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,376,008.60 : 647,064,012.90 = 140,242,568.60 : x
  2. Step 2: Convert to fraction form
    431,376,008.60/647,064,012.90 = 140,242,568.60/x
  3. Step 3: Cross multiply
    431,376,008.60x = 647,064,012.90 × 140,242,568.60
  4. Step 4: Simplify right side
    431,376,008.60x = 90,745,919,217,719,520
  5. Step 5: Solve for x
    x = 90,745,919,217,719,520/431,376,008.60
  6. Step 6: Final answer
    x = 210,363,852.90

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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.