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Finding the Fourth Proportional to 725,610.58, 1,001,354.58 and 398,937.40

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Solution

The fourth proportional to 725,610.58, 1,001,354.58 and 398,937.40 is: 550,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,610.58 : 1,001,354.58 = 398,937.40 : x
  2. Step 2: Convert to fraction form
    725,610.58/1,001,354.58 = 398,937.40/x
  3. Step 3: Cross multiply
    725,610.58x = 1,001,354.58 × 398,937.40
  4. Step 4: Simplify right side
    725,610.58x = 399,477,792,623.29
  5. Step 5: Solve for x
    x = 399,477,792,623.29/725,610.58
  6. Step 6: Final answer
    x = 550,540.20

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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.