Home / 687,244,461.52-948,397,511.56-378,195,117.52

Finding the Fourth Proportional to 687,244,461.52, 948,397,511.56 and 378,195,117.52

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Solution

The fourth proportional to 687,244,461.52, 948,397,511.56 and 378,195,117.52 is: 521,909,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,244,461.52 : 948,397,511.56 = 378,195,117.52 : x
  2. Step 2: Convert to fraction form
    687,244,461.52/948,397,511.56 = 378,195,117.52/x
  3. Step 3: Cross multiply
    687,244,461.52x = 948,397,511.56 × 378,195,117.52
  4. Step 4: Simplify right side
    687,244,461.52x = 358,679,308,340,109,696
  5. Step 5: Solve for x
    x = 358,679,308,340,109,696/687,244,461.52
  6. Step 6: Final answer
    x = 521,909,347.29

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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.