Home / 725,299.20-1,087,430.40-325,612.80

Finding the Fourth Proportional to 725,299.20, 1,087,430.40 and 325,612.80

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Solution

The fourth proportional to 725,299.20, 1,087,430.40 and 325,612.80 is: 488,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,299.20 : 1,087,430.40 = 325,612.80 : x
  2. Step 2: Convert to fraction form
    725,299.20/1,087,430.40 = 325,612.80/x
  3. Step 3: Cross multiply
    725,299.20x = 1,087,430.40 × 325,612.80
  4. Step 4: Simplify right side
    725,299.20x = 354,081,257,349.12
  5. Step 5: Solve for x
    x = 354,081,257,349.12/725,299.20
  6. Step 6: Final answer
    x = 488,186.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.