Home / 725,010.48-1,000,515-398,344.56

Finding the Fourth Proportional to 725,010.48, 1,000,515 and 398,344.56

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Solution

The fourth proportional to 725,010.48, 1,000,515 and 398,344.56 is: 549,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,010.48 : 1,000,515 = 398,344.56 : x
  2. Step 2: Convert to fraction form
    725,010.48/1,000,515 = 398,344.56/x
  3. Step 3: Cross multiply
    725,010.48x = 1,000,515 × 398,344.56
  4. Step 4: Simplify right side
    725,010.48x = 398,549,707,448.40
  5. Step 5: Solve for x
    x = 398,549,707,448.40/725,010.48
  6. Step 6: Final answer
    x = 549,715.79

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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.