Home / 870,964,621.20-1,306,446,931.80-864,918,003.60

Finding the Fourth Proportional to 870,964,621.20, 1,306,446,931.80 and 864,918,003.60

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Solution

The fourth proportional to 870,964,621.20, 1,306,446,931.80 and 864,918,003.60 is: 1,297,377,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,964,621.20 : 1,306,446,931.80 = 864,918,003.60 : x
  2. Step 2: Convert to fraction form
    870,964,621.20/1,306,446,931.80 = 864,918,003.60/x
  3. Step 3: Cross multiply
    870,964,621.20x = 1,306,446,931.80 × 864,918,003.60
  4. Step 4: Simplify right side
    870,964,621.20x = 1,129,969,472,061,801,344
  5. Step 5: Solve for x
    x = 1,129,969,472,061,801,344/870,964,621.20
  6. Step 6: Final answer
    x = 1,297,377,005.40

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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.