Home / 1,189,901.40-1,782,227.70-715,759.80

Finding the Fourth Proportional to 1,189,901.40, 1,782,227.70 and 715,759.80

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Solution

The fourth proportional to 1,189,901.40, 1,782,227.70 and 715,759.80 is: 1,072,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,901.40 : 1,782,227.70 = 715,759.80 : x
  2. Step 2: Convert to fraction form
    1,189,901.40/1,782,227.70 = 715,759.80/x
  3. Step 3: Cross multiply
    1,189,901.40x = 1,782,227.70 × 715,759.80
  4. Step 4: Simplify right side
    1,189,901.40x = 1,275,646,942,106.46
  5. Step 5: Solve for x
    x = 1,275,646,942,106.46/1,189,901.40
  6. Step 6: Final answer
    x = 1,072,061.05

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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.