Home / 854,781.30-1,179,627.34-487,312.78

Finding the Fourth Proportional to 854,781.30, 1,179,627.34 and 487,312.78

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Solution

The fourth proportional to 854,781.30, 1,179,627.34 and 487,312.78 is: 672,508.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,781.30 : 1,179,627.34 = 487,312.78 : x
  2. Step 2: Convert to fraction form
    854,781.30/1,179,627.34 = 487,312.78/x
  3. Step 3: Cross multiply
    854,781.30x = 1,179,627.34 × 487,312.78
  4. Step 4: Simplify right side
    854,781.30x = 574,847,478,419.41
  5. Step 5: Solve for x
    x = 574,847,478,419.41/854,781.30
  6. Step 6: Final answer
    x = 672,508.25

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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.