Home / 642,768.52-887,001.33-352,370.15

Finding the Fourth Proportional to 642,768.52, 887,001.33 and 352,370.15

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Solution

The fourth proportional to 642,768.52, 887,001.33 and 352,370.15 is: 486,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,768.52 : 887,001.33 = 352,370.15 : x
  2. Step 2: Convert to fraction form
    642,768.52/887,001.33 = 352,370.15/x
  3. Step 3: Cross multiply
    642,768.52x = 887,001.33 × 352,370.15
  4. Step 4: Simplify right side
    642,768.52x = 312,552,789,932.85
  5. Step 5: Solve for x
    x = 312,552,789,932.85/642,768.52
  6. Step 6: Final answer
    x = 486,260.27

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1.5x scale

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.