Home / 687,244,463.52-948,397,514.32-378,195,119.52

Finding the Fourth Proportional to 687,244,463.52, 948,397,514.32 and 378,195,119.52

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Solution

The fourth proportional to 687,244,463.52, 948,397,514.32 and 378,195,119.52 is: 521,909,350.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,244,463.52 : 948,397,514.32 = 378,195,119.52 : x
  2. Step 2: Convert to fraction form
    687,244,463.52/948,397,514.32 = 378,195,119.52/x
  3. Step 3: Cross multiply
    687,244,463.52x = 948,397,514.32 × 378,195,119.52
  4. Step 4: Simplify right side
    687,244,463.52x = 358,679,311,280,723,328
  5. Step 5: Solve for x
    x = 358,679,311,280,723,328/687,244,463.52
  6. Step 6: Final answer
    x = 521,909,350.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.