Home / 1,915,266.30-2,872,899.45-1,243,419.90

Finding the Fourth Proportional to 1,915,266.30, 2,872,899.45 and 1,243,419.90

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Solution

The fourth proportional to 1,915,266.30, 2,872,899.45 and 1,243,419.90 is: 1,865,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,266.30 : 2,872,899.45 = 1,243,419.90 : x
  2. Step 2: Convert to fraction form
    1,915,266.30/2,872,899.45 = 1,243,419.90/x
  3. Step 3: Cross multiply
    1,915,266.30x = 2,872,899.45 × 1,243,419.90
  4. Step 4: Simplify right side
    1,915,266.30x = 3,572,220,346,829.06
  5. Step 5: Solve for x
    x = 3,572,220,346,829.06/1,915,266.30
  6. Step 6: Final answer
    x = 1,865,129.85

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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.