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Finding the Fourth Proportional to 1,912,232.30, 2,868,348.45 and 1,800,039.20

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Solution

The fourth proportional to 1,912,232.30, 2,868,348.45 and 1,800,039.20 is: 2,700,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912,232.30 : 2,868,348.45 = 1,800,039.20 : x
  2. Step 2: Convert to fraction form
    1,912,232.30/2,868,348.45 = 1,800,039.20/x
  3. Step 3: Cross multiply
    1,912,232.30x = 2,868,348.45 × 1,800,039.20
  4. Step 4: Simplify right side
    1,912,232.30x = 5,163,139,649,259.24
  5. Step 5: Solve for x
    x = 5,163,139,649,259.24/1,912,232.30
  6. Step 6: Final answer
    x = 2,700,058.80

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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.