Home / 687,492,608.05-948,762,715.57-386,131,026.61

Finding the Fourth Proportional to 687,492,608.05, 948,762,715.57 and 386,131,026.61

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Solution

The fourth proportional to 687,492,608.05, 948,762,715.57 and 386,131,026.61 is: 532,873,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,492,608.05 : 948,762,715.57 = 386,131,026.61 : x
  2. Step 2: Convert to fraction form
    687,492,608.05/948,762,715.57 = 386,131,026.61/x
  3. Step 3: Cross multiply
    687,492,608.05x = 948,762,715.57 × 386,131,026.61
  4. Step 4: Simplify right side
    687,492,608.05x = 366,346,721,367,591,744
  5. Step 5: Solve for x
    x = 366,346,721,367,591,744/687,492,608.05
  6. Step 6: Final answer
    x = 532,873,687.78

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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.