Home / 815,853.60-1,223,780.40-724,874.40

Finding the Fourth Proportional to 815,853.60, 1,223,780.40 and 724,874.40

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Solution

The fourth proportional to 815,853.60, 1,223,780.40 and 724,874.40 is: 1,087,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,853.60 : 1,223,780.40 = 724,874.40 : x
  2. Step 2: Convert to fraction form
    815,853.60/1,223,780.40 = 724,874.40/x
  3. Step 3: Cross multiply
    815,853.60x = 1,223,780.40 × 724,874.40
  4. Step 4: Simplify right side
    815,853.60x = 887,087,083,181.76
  5. Step 5: Solve for x
    x = 887,087,083,181.76/815,853.60
  6. Step 6: Final answer
    x = 1,087,311.60

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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.