Home / 820,152.80-1,230,229.20-784,723.40

Finding the Fourth Proportional to 820,152.80, 1,230,229.20 and 784,723.40

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Solution

The fourth proportional to 820,152.80, 1,230,229.20 and 784,723.40 is: 1,177,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,152.80 : 1,230,229.20 = 784,723.40 : x
  2. Step 2: Convert to fraction form
    820,152.80/1,230,229.20 = 784,723.40/x
  3. Step 3: Cross multiply
    820,152.80x = 1,230,229.20 × 784,723.40
  4. Step 4: Simplify right side
    820,152.80x = 965,389,640,603.28
  5. Step 5: Solve for x
    x = 965,389,640,603.28/820,152.80
  6. Step 6: Final answer
    x = 1,177,085.10

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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.