Home / 687,630.48-1,031,444.82-261,165.48

Finding the Fourth Proportional to 687,630.48, 1,031,444.82 and 261,165.48

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Solution

The fourth proportional to 687,630.48, 1,031,444.82 and 261,165.48 is: 391,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,630.48 : 1,031,444.82 = 261,165.48 : x
  2. Step 2: Convert to fraction form
    687,630.48/1,031,444.82 = 261,165.48/x
  3. Step 3: Cross multiply
    687,630.48x = 1,031,444.82 × 261,165.48
  4. Step 4: Simplify right side
    687,630.48x = 269,377,781,508.81
  5. Step 5: Solve for x
    x = 269,377,781,508.81/687,630.48
  6. Step 6: Final answer
    x = 391,747.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.