Home / 870,270,209.28-1,305,405,313.92-287,847,964.80

Finding the Fourth Proportional to 870,270,209.28, 1,305,405,313.92 and 287,847,964.80

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Solution

The fourth proportional to 870,270,209.28, 1,305,405,313.92 and 287,847,964.80 is: 431,771,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,270,209.28 : 1,305,405,313.92 = 287,847,964.80 : x
  2. Step 2: Convert to fraction form
    870,270,209.28/1,305,405,313.92 = 287,847,964.80/x
  3. Step 3: Cross multiply
    870,270,209.28x = 1,305,405,313.92 × 287,847,964.80
  4. Step 4: Simplify right side
    870,270,209.28x = 375,758,262,850,977,152
  5. Step 5: Solve for x
    x = 375,758,262,850,977,152/870,270,209.28
  6. Step 6: Final answer
    x = 431,771,947.20

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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.