Home / 1,687,012.80-2,530,519.20-689,507.52

Finding the Fourth Proportional to 1,687,012.80, 2,530,519.20 and 689,507.52

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Solution

The fourth proportional to 1,687,012.80, 2,530,519.20 and 689,507.52 is: 1,034,261.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,012.80 : 2,530,519.20 = 689,507.52 : x
  2. Step 2: Convert to fraction form
    1,687,012.80/2,530,519.20 = 689,507.52/x
  3. Step 3: Cross multiply
    1,687,012.80x = 2,530,519.20 × 689,507.52
  4. Step 4: Simplify right side
    1,687,012.80x = 1,744,812,017,904.38
  5. Step 5: Solve for x
    x = 1,744,812,017,904.38/1,687,012.80
  6. Step 6: Final answer
    x = 1,034,261.28

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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.