Home / 725,121.66-1,000,645.47-402,823.38

Finding the Fourth Proportional to 725,121.66, 1,000,645.47 and 402,823.38

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Solution

The fourth proportional to 725,121.66, 1,000,645.47 and 402,823.38 is: 555,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,121.66 : 1,000,645.47 = 402,823.38 : x
  2. Step 2: Convert to fraction form
    725,121.66/1,000,645.47 = 402,823.38/x
  3. Step 3: Cross multiply
    725,121.66x = 1,000,645.47 × 402,823.38
  4. Step 4: Simplify right side
    725,121.66x = 403,083,390,407.09
  5. Step 5: Solve for x
    x = 403,083,390,407.09/725,121.66
  6. Step 6: Final answer
    x = 555,883.81

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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.