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Finding the Fourth Proportional to 880,987, 1,215,658.92 and 518,331.10

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Solution

The fourth proportional to 880,987, 1,215,658.92 and 518,331.10 is: 715,236.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,987 : 1,215,658.92 = 518,331.10 : x
  2. Step 2: Convert to fraction form
    880,987/1,215,658.92 = 518,331.10/x
  3. Step 3: Cross multiply
    880,987x = 1,215,658.92 × 518,331.10
  4. Step 4: Simplify right side
    880,987x = 630,113,825,228.41
  5. Step 5: Solve for x
    x = 630,113,825,228.41/880,987
  6. Step 6: Final answer
    x = 715,236.24

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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.