Home / 858,785.70-1,288,178.55-740,687.70

Finding the Fourth Proportional to 858,785.70, 1,288,178.55 and 740,687.70

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Solution

The fourth proportional to 858,785.70, 1,288,178.55 and 740,687.70 is: 1,111,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,785.70 : 1,288,178.55 = 740,687.70 : x
  2. Step 2: Convert to fraction form
    858,785.70/1,288,178.55 = 740,687.70/x
  3. Step 3: Cross multiply
    858,785.70x = 1,288,178.55 × 740,687.70
  4. Step 4: Simplify right side
    858,785.70x = 954,138,007,388.84
  5. Step 5: Solve for x
    x = 954,138,007,388.84/858,785.70
  6. Step 6: Final answer
    x = 1,111,031.55

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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.