Home / 858,155.40-1,287,233.10-818,789.40

Finding the Fourth Proportional to 858,155.40, 1,287,233.10 and 818,789.40

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Solution

The fourth proportional to 858,155.40, 1,287,233.10 and 818,789.40 is: 1,228,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,155.40 : 1,287,233.10 = 818,789.40 : x
  2. Step 2: Convert to fraction form
    858,155.40/1,287,233.10 = 818,789.40/x
  3. Step 3: Cross multiply
    858,155.40x = 1,287,233.10 × 818,789.40
  4. Step 4: Simplify right side
    858,155.40x = 1,053,972,817,609.14
  5. Step 5: Solve for x
    x = 1,053,972,817,609.14/858,155.40
  6. Step 6: Final answer
    x = 1,228,184.10

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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.