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Finding the Fourth Proportional to 1,799,987.67, 2,699,909.82 and 991,974.01

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Solution

The fourth proportional to 1,799,987.67, 2,699,909.82 and 991,974.01 is: 1,487,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,799,987.67 : 2,699,909.82 = 991,974.01 : x
  2. Step 2: Convert to fraction form
    1,799,987.67/2,699,909.82 = 991,974.01/x
  3. Step 3: Cross multiply
    1,799,987.67x = 2,699,909.82 × 991,974.01
  4. Step 4: Simplify right side
    1,799,987.67x = 2,678,240,369,484.53
  5. Step 5: Solve for x
    x = 2,678,240,369,484.53/1,799,987.67
  6. Step 6: Final answer
    x = 1,487,921.51

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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.