Home / 725,746.59-1,001,661.20-419,780.43

Finding the Fourth Proportional to 725,746.59, 1,001,661.20 and 419,780.43

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Solution

The fourth proportional to 725,746.59, 1,001,661.20 and 419,780.43 is: 579,372.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,746.59 : 1,001,661.20 = 419,780.43 : x
  2. Step 2: Convert to fraction form
    725,746.59/1,001,661.20 = 419,780.43/x
  3. Step 3: Cross multiply
    725,746.59x = 1,001,661.20 × 419,780.43
  4. Step 4: Simplify right side
    725,746.59x = 420,477,767,151.41
  5. Step 5: Solve for x
    x = 420,477,767,151.41/725,746.59
  6. Step 6: Final answer
    x = 579,372.71

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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.