Home / 815,799.60-1,223,699.40-724,820.40

Finding the Fourth Proportional to 815,799.60, 1,223,699.40 and 724,820.40

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Solution

The fourth proportional to 815,799.60, 1,223,699.40 and 724,820.40 is: 1,087,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,799.60 : 1,223,699.40 = 724,820.40 : x
  2. Step 2: Convert to fraction form
    815,799.60/1,223,699.40 = 724,820.40/x
  3. Step 3: Cross multiply
    815,799.60x = 1,223,699.40 × 724,820.40
  4. Step 4: Simplify right side
    815,799.60x = 886,962,288,587.76
  5. Step 5: Solve for x
    x = 886,962,288,587.76/815,799.60
  6. Step 6: Final answer
    x = 1,087,230.60

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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.