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Finding the Fourth Proportional to 870,978.54, 1,305,959.30 and 337,876.62

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Solution

The fourth proportional to 870,978.54, 1,305,959.30 and 337,876.62 is: 506,617.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,978.54 : 1,305,959.30 = 337,876.62 : x
  2. Step 2: Convert to fraction form
    870,978.54/1,305,959.30 = 337,876.62/x
  3. Step 3: Cross multiply
    870,978.54x = 1,305,959.30 × 337,876.62
  4. Step 4: Simplify right side
    870,978.54x = 441,253,112,452.18
  5. Step 5: Solve for x
    x = 441,253,112,452.18/870,978.54
  6. Step 6: Final answer
    x = 506,617.66

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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.