Home / 999,793.92-1,378,280.16-712,815.60

Finding the Fourth Proportional to 999,793.92, 1,378,280.16 and 712,815.60

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Solution

The fourth proportional to 999,793.92, 1,378,280.16 and 712,815.60 is: 982,662.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,793.92 : 1,378,280.16 = 712,815.60 : x
  2. Step 2: Convert to fraction form
    999,793.92/1,378,280.16 = 712,815.60/x
  3. Step 3: Cross multiply
    999,793.92x = 1,378,280.16 × 712,815.60
  4. Step 4: Simplify right side
    999,793.92x = 982,459,599,218.50
  5. Step 5: Solve for x
    x = 982,459,599,218.50/999,793.92
  6. Step 6: Final answer
    x = 982,662.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.