Home / 486,712.10-729,944.91-145,076.69

Finding the Fourth Proportional to 486,712.10, 729,944.91 and 145,076.69

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Solution

The fourth proportional to 486,712.10, 729,944.91 and 145,076.69 is: 217,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,712.10 : 729,944.91 = 145,076.69 : x
  2. Step 2: Convert to fraction form
    486,712.10/729,944.91 = 145,076.69/x
  3. Step 3: Cross multiply
    486,712.10x = 729,944.91 × 145,076.69
  4. Step 4: Simplify right side
    486,712.10x = 105,897,987,775.42
  5. Step 5: Solve for x
    x = 105,897,987,775.42/486,712.10
  6. Step 6: Final answer
    x = 217,578.29

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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.