Home / 858,761.70-1,288,142.55-740,663.70

Finding the Fourth Proportional to 858,761.70, 1,288,142.55 and 740,663.70

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Solution

The fourth proportional to 858,761.70, 1,288,142.55 and 740,663.70 is: 1,110,995.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,761.70 : 1,288,142.55 = 740,663.70 : x
  2. Step 2: Convert to fraction form
    858,761.70/1,288,142.55 = 740,663.70/x
  3. Step 3: Cross multiply
    858,761.70x = 1,288,142.55 × 740,663.70
  4. Step 4: Simplify right side
    858,761.70x = 954,080,427,210.44
  5. Step 5: Solve for x
    x = 954,080,427,210.44/858,761.70
  6. Step 6: Final answer
    x = 1,110,995.55

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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.