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Finding the Fourth Proportional to 1,799,798.10, 2,699,697.15 and 1,321,501.20

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Solution

The fourth proportional to 1,799,798.10, 2,699,697.15 and 1,321,501.20 is: 1,982,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,799,798.10 : 2,699,697.15 = 1,321,501.20 : x
  2. Step 2: Convert to fraction form
    1,799,798.10/2,699,697.15 = 1,321,501.20/x
  3. Step 3: Cross multiply
    1,799,798.10x = 2,699,697.15 × 1,321,501.20
  4. Step 4: Simplify right side
    1,799,798.10x = 3,567,653,023,361.58
  5. Step 5: Solve for x
    x = 3,567,653,023,361.58/1,799,798.10
  6. Step 6: Final answer
    x = 1,982,251.80

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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.