Home / 725,284.23-1,000,916.23-398,608.82

Finding the Fourth Proportional to 725,284.23, 1,000,916.23 and 398,608.82

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Solution

The fourth proportional to 725,284.23, 1,000,916.23 and 398,608.82 is: 550,093.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,284.23 : 1,000,916.23 = 398,608.82 : x
  2. Step 2: Convert to fraction form
    725,284.23/1,000,916.23 = 398,608.82/x
  3. Step 3: Cross multiply
    725,284.23x = 1,000,916.23 × 398,608.82
  4. Step 4: Simplify right side
    725,284.23x = 398,974,031,358.05
  5. Step 5: Solve for x
    x = 398,974,031,358.05/725,284.23
  6. Step 6: Final answer
    x = 550,093.35

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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.