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Finding the Fourth Proportional to 1,866,206.80, 2,799,310.20 and 1,492,958.80

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Solution

The fourth proportional to 1,866,206.80, 2,799,310.20 and 1,492,958.80 is: 2,239,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,206.80 : 2,799,310.20 = 1,492,958.80 : x
  2. Step 2: Convert to fraction form
    1,866,206.80/2,799,310.20 = 1,492,958.80/x
  3. Step 3: Cross multiply
    1,866,206.80x = 2,799,310.20 × 1,492,958.80
  4. Step 4: Simplify right side
    1,866,206.80x = 4,179,254,797,019.76
  5. Step 5: Solve for x
    x = 4,179,254,797,019.76/1,866,206.80
  6. Step 6: Final answer
    x = 2,239,438.20

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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.