Home / 1,318,109.13-1,977,145.25-519,397.61

Finding the Fourth Proportional to 1,318,109.13, 1,977,145.25 and 519,397.61

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Solution

The fourth proportional to 1,318,109.13, 1,977,145.25 and 519,397.61 is: 779,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,109.13 : 1,977,145.25 = 519,397.61 : x
  2. Step 2: Convert to fraction form
    1,318,109.13/1,977,145.25 = 519,397.61/x
  3. Step 3: Cross multiply
    1,318,109.13x = 1,977,145.25 × 519,397.61
  4. Step 4: Simplify right side
    1,318,109.13x = 1,026,924,504,990.14
  5. Step 5: Solve for x
    x = 1,026,924,504,990.14/1,318,109.13
  6. Step 6: Final answer
    x = 779,089.14

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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.