Home / 861,059,768.18-1,188,629,781.19-578,965,718.48

Finding the Fourth Proportional to 861,059,768.18, 1,188,629,781.19 and 578,965,718.48

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Solution

The fourth proportional to 861,059,768.18, 1,188,629,781.19 and 578,965,718.48 is: 799,219,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,059,768.18 : 1,188,629,781.19 = 578,965,718.48 : x
  2. Step 2: Convert to fraction form
    861,059,768.18/1,188,629,781.19 = 578,965,718.48/x
  3. Step 3: Cross multiply
    861,059,768.18x = 1,188,629,781.19 × 578,965,718.48
  4. Step 4: Simplify right side
    861,059,768.18x = 688,175,895,273,393,536
  5. Step 5: Solve for x
    x = 688,175,895,273,393,536/861,059,768.18
  6. Step 6: Final answer
    x = 799,219,660.13

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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.