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Finding the Fourth Proportional to 1,868,694.80, 2,803,042.20 and 1,833,265.40

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Solution

The fourth proportional to 1,868,694.80, 2,803,042.20 and 1,833,265.40 is: 2,749,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,694.80 : 2,803,042.20 = 1,833,265.40 : x
  2. Step 2: Convert to fraction form
    1,868,694.80/2,803,042.20 = 1,833,265.40/x
  3. Step 3: Cross multiply
    1,868,694.80x = 2,803,042.20 × 1,833,265.40
  4. Step 4: Simplify right side
    1,868,694.80x = 5,138,720,279,999.88
  5. Step 5: Solve for x
    x = 5,138,720,279,999.88/1,868,694.80
  6. Step 6: Final answer
    x = 2,749,898.10

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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.