Home / 421,834,697.60-632,752,046.40-115,157,811.20

Finding the Fourth Proportional to 421,834,697.60, 632,752,046.40 and 115,157,811.20

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Solution

The fourth proportional to 421,834,697.60, 632,752,046.40 and 115,157,811.20 is: 172,736,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,834,697.60 : 632,752,046.40 = 115,157,811.20 : x
  2. Step 2: Convert to fraction form
    421,834,697.60/632,752,046.40 = 115,157,811.20/x
  3. Step 3: Cross multiply
    421,834,697.60x = 632,752,046.40 × 115,157,811.20
  4. Step 4: Simplify right side
    421,834,697.60x = 72,866,340,695,744,832
  5. Step 5: Solve for x
    x = 72,866,340,695,744,832/421,834,697.60
  6. Step 6: Final answer
    x = 172,736,716.80

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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.