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Finding the Fourth Proportional to 688,478.08, 950,053.76 and 398,067.72

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Solution

The fourth proportional to 688,478.08, 950,053.76 and 398,067.72 is: 549,306.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,478.08 : 950,053.76 = 398,067.72 : x
  2. Step 2: Convert to fraction form
    688,478.08/950,053.76 = 398,067.72/x
  3. Step 3: Cross multiply
    688,478.08x = 950,053.76 × 398,067.72
  4. Step 4: Simplify right side
    688,478.08x = 378,185,730,060.34
  5. Step 5: Solve for x
    x = 378,185,730,060.34/688,478.08
  6. Step 6: Final answer
    x = 549,306.86

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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.