Home / 678,031.72-935,865.30-423,229.48

Finding the Fourth Proportional to 678,031.72, 935,865.30 and 423,229.48

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Solution

The fourth proportional to 678,031.72, 935,865.30 and 423,229.48 is: 584,169.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,031.72 : 935,865.30 = 423,229.48 : x
  2. Step 2: Convert to fraction form
    678,031.72/935,865.30 = 423,229.48/x
  3. Step 3: Cross multiply
    678,031.72x = 935,865.30 × 423,229.48
  4. Step 4: Simplify right side
    678,031.72x = 396,085,784,269.04
  5. Step 5: Solve for x
    x = 396,085,784,269.04/678,031.72
  6. Step 6: Final answer
    x = 584,169.99

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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.