Home / 1,259,499.80-1,888,020.90-1,126,789.40

Finding the Fourth Proportional to 1,259,499.80, 1,888,020.90 and 1,126,789.40

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Solution

The fourth proportional to 1,259,499.80, 1,888,020.90 and 1,126,789.40 is: 1,689,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,499.80 : 1,888,020.90 = 1,126,789.40 : x
  2. Step 2: Convert to fraction form
    1,259,499.80/1,888,020.90 = 1,126,789.40/x
  3. Step 3: Cross multiply
    1,259,499.80x = 1,888,020.90 × 1,126,789.40
  4. Step 4: Simplify right side
    1,259,499.80x = 2,127,401,937,098.46
  5. Step 5: Solve for x
    x = 2,127,401,937,098.46/1,259,499.80
  6. Step 6: Final answer
    x = 1,689,084.78

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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.