Home / 1,391,114.85-1,916,461.11-1,307,412.90

Finding the Fourth Proportional to 1,391,114.85, 1,916,461.11 and 1,307,412.90

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Solution

The fourth proportional to 1,391,114.85, 1,916,461.11 and 1,307,412.90 is: 1,801,149.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,114.85 : 1,916,461.11 = 1,307,412.90 : x
  2. Step 2: Convert to fraction form
    1,391,114.85/1,916,461.11 = 1,307,412.90/x
  3. Step 3: Cross multiply
    1,391,114.85x = 1,916,461.11 × 1,307,412.90
  4. Step 4: Simplify right side
    1,391,114.85x = 2,505,605,977,562.32
  5. Step 5: Solve for x
    x = 2,505,605,977,562.32/1,391,114.85
  6. Step 6: Final answer
    x = 1,801,149.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.