Home / 642,818.19-887,099.07-352,456.25

Finding the Fourth Proportional to 642,818.19, 887,099.07 and 352,456.25

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Solution

The fourth proportional to 642,818.19, 887,099.07 and 352,456.25 is: 486,395.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,818.19 : 887,099.07 = 352,456.25 : x
  2. Step 2: Convert to fraction form
    642,818.19/887,099.07 = 352,456.25/x
  3. Step 3: Cross multiply
    642,818.19x = 887,099.07 × 352,456.25
  4. Step 4: Simplify right side
    642,818.19x = 312,663,608,476.90
  5. Step 5: Solve for x
    x = 312,663,608,476.90/642,818.19
  6. Step 6: Final answer
    x = 486,395.08

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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.