Home / 699,445.80-1,049,168.70-687,781.80

Finding the Fourth Proportional to 699,445.80, 1,049,168.70 and 687,781.80

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Solution

The fourth proportional to 699,445.80, 1,049,168.70 and 687,781.80 is: 1,031,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,445.80 : 1,049,168.70 = 687,781.80 : x
  2. Step 2: Convert to fraction form
    699,445.80/1,049,168.70 = 687,781.80/x
  3. Step 3: Cross multiply
    699,445.80x = 1,049,168.70 × 687,781.80
  4. Step 4: Simplify right side
    699,445.80x = 721,599,136,989.66
  5. Step 5: Solve for x
    x = 721,599,136,989.66/699,445.80
  6. Step 6: Final answer
    x = 1,031,672.70

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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.