Home / 720,981,002.70-1,081,471,504.05-478,643,906.70

Finding the Fourth Proportional to 720,981,002.70, 1,081,471,504.05 and 478,643,906.70

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Solution

The fourth proportional to 720,981,002.70, 1,081,471,504.05 and 478,643,906.70 is: 717,965,860.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,981,002.70 : 1,081,471,504.05 = 478,643,906.70 : x
  2. Step 2: Convert to fraction form
    720,981,002.70/1,081,471,504.05 = 478,643,906.70/x
  3. Step 3: Cross multiply
    720,981,002.70x = 1,081,471,504.05 × 478,643,906.70
  4. Step 4: Simplify right side
    720,981,002.70x = 517,639,745,683,216,832
  5. Step 5: Solve for x
    x = 517,639,745,683,216,832/720,981,002.70
  6. Step 6: Final answer
    x = 717,965,860.05

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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.