Home / 725,987.60-1,001,821.68-403,690.78

Finding the Fourth Proportional to 725,987.60, 1,001,821.68 and 403,690.78

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Solution

The fourth proportional to 725,987.60, 1,001,821.68 and 403,690.78 is: 557,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,987.60 : 1,001,821.68 = 403,690.78 : x
  2. Step 2: Convert to fraction form
    725,987.60/1,001,821.68 = 403,690.78/x
  3. Step 3: Cross multiply
    725,987.60x = 1,001,821.68 × 403,690.78
  4. Step 4: Simplify right side
    725,987.60x = 404,426,172,915.56
  5. Step 5: Solve for x
    x = 404,426,172,915.56/725,987.60
  6. Step 6: Final answer
    x = 557,070.36

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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.