Home / 642,422.12-886,512.66-352,031.96

Finding the Fourth Proportional to 642,422.12, 886,512.66 and 352,031.96

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Solution

The fourth proportional to 642,422.12, 886,512.66 and 352,031.96 is: 485,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,422.12 : 886,512.66 = 352,031.96 : x
  2. Step 2: Convert to fraction form
    642,422.12/886,512.66 = 352,031.96/x
  3. Step 3: Cross multiply
    642,422.12x = 886,512.66 × 352,031.96
  4. Step 4: Simplify right side
    642,422.12x = 312,080,789,264.61
  5. Step 5: Solve for x
    x = 312,080,789,264.61/642,422.12
  6. Step 6: Final answer
    x = 485,787.74

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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.