Home / 876,987.20-1,315,999.20-315,948.80

Finding the Fourth Proportional to 876,987.20, 1,315,999.20 and 315,948.80

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Solution

The fourth proportional to 876,987.20, 1,315,999.20 and 315,948.80 is: 474,109.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,987.20 : 1,315,999.20 = 315,948.80 : x
  2. Step 2: Convert to fraction form
    876,987.20/1,315,999.20 = 315,948.80/x
  3. Step 3: Cross multiply
    876,987.20x = 1,315,999.20 × 315,948.80
  4. Step 4: Simplify right side
    876,987.20x = 415,788,368,040.96
  5. Step 5: Solve for x
    x = 415,788,368,040.96/876,987.20
  6. Step 6: Final answer
    x = 474,109.96

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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.