Home / 870,257,429.20-1,305,008,230.20-287,766,600.40

Finding the Fourth Proportional to 870,257,429.20, 1,305,008,230.20 and 287,766,600.40

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Solution

The fourth proportional to 870,257,429.20, 1,305,008,230.20 and 287,766,600.40 is: 431,524,936.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,257,429.20 : 1,305,008,230.20 = 287,766,600.40 : x
  2. Step 2: Convert to fraction form
    870,257,429.20/1,305,008,230.20 = 287,766,600.40/x
  3. Step 3: Cross multiply
    870,257,429.20x = 1,305,008,230.20 × 287,766,600.40
  4. Step 4: Simplify right side
    870,257,429.20x = 375,537,781,898,674,624
  5. Step 5: Solve for x
    x = 375,537,781,898,674,624/870,257,429.20
  6. Step 6: Final answer
    x = 431,524,936.53

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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.