Home / 820,084.85-1,230,127.28-288,206.45

Finding the Fourth Proportional to 820,084.85, 1,230,127.28 and 288,206.45

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Solution

The fourth proportional to 820,084.85, 1,230,127.28 and 288,206.45 is: 432,309.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,084.85 : 1,230,127.28 = 288,206.45 : x
  2. Step 2: Convert to fraction form
    820,084.85/1,230,127.28 = 288,206.45/x
  3. Step 3: Cross multiply
    820,084.85x = 1,230,127.28 × 288,206.45
  4. Step 4: Simplify right side
    820,084.85x = 354,530,614,975.92
  5. Step 5: Solve for x
    x = 354,530,614,975.92/820,084.85
  6. Step 6: Final answer
    x = 432,309.68

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Double scale
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Similar ratio
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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.