Home / 858,761.20-1,288,141.80-740,663.20

Finding the Fourth Proportional to 858,761.20, 1,288,141.80 and 740,663.20

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Solution

The fourth proportional to 858,761.20, 1,288,141.80 and 740,663.20 is: 1,110,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,761.20 : 1,288,141.80 = 740,663.20 : x
  2. Step 2: Convert to fraction form
    858,761.20/1,288,141.80 = 740,663.20/x
  3. Step 3: Cross multiply
    858,761.20x = 1,288,141.80 × 740,663.20
  4. Step 4: Simplify right side
    858,761.20x = 954,079,227,641.76
  5. Step 5: Solve for x
    x = 954,079,227,641.76/858,761.20
  6. Step 6: Final answer
    x = 1,110,994.80

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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.