Home / 786,629.40-1,180,818.90-487,447.80

Finding the Fourth Proportional to 786,629.40, 1,180,818.90 and 487,447.80

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Solution

The fourth proportional to 786,629.40, 1,180,818.90 and 487,447.80 is: 731,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,629.40 : 1,180,818.90 = 487,447.80 : x
  2. Step 2: Convert to fraction form
    786,629.40/1,180,818.90 = 487,447.80/x
  3. Step 3: Cross multiply
    786,629.40x = 1,180,818.90 × 487,447.80
  4. Step 4: Simplify right side
    786,629.40x = 575,587,575,003.42
  5. Step 5: Solve for x
    x = 575,587,575,003.42/786,629.40
  6. Step 6: Final answer
    x = 731,713.78

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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.