Home / 725,987.19-1,001,821.20-403,690.38

Finding the Fourth Proportional to 725,987.19, 1,001,821.20 and 403,690.38

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Solution

The fourth proportional to 725,987.19, 1,001,821.20 and 403,690.38 is: 557,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,987.19 : 1,001,821.20 = 403,690.38 : x
  2. Step 2: Convert to fraction form
    725,987.19/1,001,821.20 = 403,690.38/x
  3. Step 3: Cross multiply
    725,987.19x = 1,001,821.20 × 403,690.38
  4. Step 4: Simplify right side
    725,987.19x = 404,425,575,649.39
  5. Step 5: Solve for x
    x = 404,425,575,649.39/725,987.19
  6. Step 6: Final answer
    x = 557,069.85

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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.