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Finding the Fourth Proportional to 543,708.40, 815,562.60 and 494,719.60

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Solution

The fourth proportional to 543,708.40, 815,562.60 and 494,719.60 is: 742,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,708.40 : 815,562.60 = 494,719.60 : x
  2. Step 2: Convert to fraction form
    543,708.40/815,562.60 = 494,719.60/x
  3. Step 3: Cross multiply
    543,708.40x = 815,562.60 × 494,719.60
  4. Step 4: Simplify right side
    543,708.40x = 403,474,803,246.96
  5. Step 5: Solve for x
    x = 403,474,803,246.96/543,708.40
  6. Step 6: Final answer
    x = 742,079.40

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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.