Home / 815,708.40-1,223,562.60-343,316.40

Finding the Fourth Proportional to 815,708.40, 1,223,562.60 and 343,316.40

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Solution

The fourth proportional to 815,708.40, 1,223,562.60 and 343,316.40 is: 514,974.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,708.40 : 1,223,562.60 = 343,316.40 : x
  2. Step 2: Convert to fraction form
    815,708.40/1,223,562.60 = 343,316.40/x
  3. Step 3: Cross multiply
    815,708.40x = 1,223,562.60 × 343,316.40
  4. Step 4: Simplify right side
    815,708.40x = 420,069,107,006.64
  5. Step 5: Solve for x
    x = 420,069,107,006.64/815,708.40
  6. Step 6: Final answer
    x = 514,974.60

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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.