Home / 819,897.15-1,229,810.31-280,201.62

Finding the Fourth Proportional to 819,897.15, 1,229,810.31 and 280,201.62

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Solution

The fourth proportional to 819,897.15, 1,229,810.31 and 280,201.62 is: 420,290.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,897.15 : 1,229,810.31 = 280,201.62 : x
  2. Step 2: Convert to fraction form
    819,897.15/1,229,810.31 = 280,201.62/x
  3. Step 3: Cross multiply
    819,897.15x = 1,229,810.31 × 280,201.62
  4. Step 4: Simplify right side
    819,897.15x = 344,594,841,154.70
  5. Step 5: Solve for x
    x = 344,594,841,154.70/819,897.15
  6. Step 6: Final answer
    x = 420,290.33

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1.5x scale

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.