Home / 854,512.80-1,280,732.40-380,695.20

Finding the Fourth Proportional to 854,512.80, 1,280,732.40 and 380,695.20

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Solution

The fourth proportional to 854,512.80, 1,280,732.40 and 380,695.20 is: 570,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,512.80 : 1,280,732.40 = 380,695.20 : x
  2. Step 2: Convert to fraction form
    854,512.80/1,280,732.40 = 380,695.20/x
  3. Step 3: Cross multiply
    854,512.80x = 1,280,732.40 × 380,695.20
  4. Step 4: Simplify right side
    854,512.80x = 487,568,677,164.48
  5. Step 5: Solve for x
    x = 487,568,677,164.48/854,512.80
  6. Step 6: Final answer
    x = 570,580.89

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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.