Home / 865,109.28-1,297,942.16-415,862.88

Finding the Fourth Proportional to 865,109.28, 1,297,942.16 and 415,862.88

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Solution

The fourth proportional to 865,109.28, 1,297,942.16 and 415,862.88 is: 623,928.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,109.28 : 1,297,942.16 = 415,862.88 : x
  2. Step 2: Convert to fraction form
    865,109.28/1,297,942.16 = 415,862.88/x
  3. Step 3: Cross multiply
    865,109.28x = 1,297,942.16 × 415,862.88
  4. Step 4: Simplify right side
    865,109.28x = 539,765,964,731.02
  5. Step 5: Solve for x
    x = 539,765,964,731.02/865,109.28
  6. Step 6: Final answer
    x = 623,928.07

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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.