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Finding the Fourth Proportional to 876,211.40, 1,314,662.70 and 343,641.80

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Solution

The fourth proportional to 876,211.40, 1,314,662.70 and 343,641.80 is: 515,598.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,211.40 : 1,314,662.70 = 343,641.80 : x
  2. Step 2: Convert to fraction form
    876,211.40/1,314,662.70 = 343,641.80/x
  3. Step 3: Cross multiply
    876,211.40x = 1,314,662.70 × 343,641.80
  4. Step 4: Simplify right side
    876,211.40x = 451,773,056,620.86
  5. Step 5: Solve for x
    x = 451,773,056,620.86/876,211.40
  6. Step 6: Final answer
    x = 515,598.24

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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.