Home / 677,806.38-1,015,354.04-407,785.59

Finding the Fourth Proportional to 677,806.38, 1,015,354.04 and 407,785.59

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Solution

The fourth proportional to 677,806.38, 1,015,354.04 and 407,785.59 is: 610,862.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,806.38 : 1,015,354.04 = 407,785.59 : x
  2. Step 2: Convert to fraction form
    677,806.38/1,015,354.04 = 407,785.59/x
  3. Step 3: Cross multiply
    677,806.38x = 1,015,354.04 × 407,785.59
  4. Step 4: Simplify right side
    677,806.38x = 414,046,744,221.36
  5. Step 5: Solve for x
    x = 414,046,744,221.36/677,806.38
  6. Step 6: Final answer
    x = 610,862.86

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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.