Home / 543,423.20-815,280.60-484,665.80

Finding the Fourth Proportional to 543,423.20, 815,280.60 and 484,665.80

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Solution

The fourth proportional to 543,423.20, 815,280.60 and 484,665.80 is: 727,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,423.20 : 815,280.60 = 484,665.80 : x
  2. Step 2: Convert to fraction form
    543,423.20/815,280.60 = 484,665.80/x
  3. Step 3: Cross multiply
    543,423.20x = 815,280.60 × 484,665.80
  4. Step 4: Simplify right side
    543,423.20x = 395,138,624,223.48
  5. Step 5: Solve for x
    x = 395,138,624,223.48/543,423.20
  6. Step 6: Final answer
    x = 727,128.74

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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.