Home / 876,121.20-1,314,181.80-315,082.80

Finding the Fourth Proportional to 876,121.20, 1,314,181.80 and 315,082.80

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Solution

The fourth proportional to 876,121.20, 1,314,181.80 and 315,082.80 is: 472,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,121.20 : 1,314,181.80 = 315,082.80 : x
  2. Step 2: Convert to fraction form
    876,121.20/1,314,181.80 = 315,082.80/x
  3. Step 3: Cross multiply
    876,121.20x = 1,314,181.80 × 315,082.80
  4. Step 4: Simplify right side
    876,121.20x = 414,076,081,253.04
  5. Step 5: Solve for x
    x = 414,076,081,253.04/876,121.20
  6. Step 6: Final answer
    x = 472,624.20

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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.