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Finding the Fourth Proportional to 1,866,029.40, 2,799,044.10 and 800,890.20

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Solution

The fourth proportional to 1,866,029.40, 2,799,044.10 and 800,890.20 is: 1,201,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,029.40 : 2,799,044.10 = 800,890.20 : x
  2. Step 2: Convert to fraction form
    1,866,029.40/2,799,044.10 = 800,890.20/x
  3. Step 3: Cross multiply
    1,866,029.40x = 2,799,044.10 × 800,890.20
  4. Step 4: Simplify right side
    1,866,029.40x = 2,241,726,989,057.82
  5. Step 5: Solve for x
    x = 2,241,726,989,057.82/1,866,029.40
  6. Step 6: Final answer
    x = 1,201,335.30

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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.