Home / 725,398.72-1,000,986.56-403,088.40

Finding the Fourth Proportional to 725,398.72, 1,000,986.56 and 403,088.40

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Solution

The fourth proportional to 725,398.72, 1,000,986.56 and 403,088.40 is: 556,226.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,398.72 : 1,000,986.56 = 403,088.40 : x
  2. Step 2: Convert to fraction form
    725,398.72/1,000,986.56 = 403,088.40/x
  3. Step 3: Cross multiply
    725,398.72x = 1,000,986.56 × 403,088.40
  4. Step 4: Simplify right side
    725,398.72x = 403,486,070,891.90
  5. Step 5: Solve for x
    x = 403,486,070,891.90/725,398.72
  6. Step 6: Final answer
    x = 556,226.61

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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.