Home / 661,120,488.80-991,680,733.20-620,809,704.80

Finding the Fourth Proportional to 661,120,488.80, 991,680,733.20 and 620,809,704.80

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Solution

The fourth proportional to 661,120,488.80, 991,680,733.20 and 620,809,704.80 is: 931,214,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,120,488.80 : 991,680,733.20 = 620,809,704.80 : x
  2. Step 2: Convert to fraction form
    661,120,488.80/991,680,733.20 = 620,809,704.80/x
  3. Step 3: Cross multiply
    661,120,488.80x = 991,680,733.20 × 620,809,704.80
  4. Step 4: Simplify right side
    661,120,488.80x = 615,645,023,233,739,520
  5. Step 5: Solve for x
    x = 615,645,023,233,739,520/661,120,488.80
  6. Step 6: Final answer
    x = 931,214,557.20

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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.