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Finding the Fourth Proportional to 618,453.70, 927,680.55 and 369,621.70

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Solution

The fourth proportional to 618,453.70, 927,680.55 and 369,621.70 is: 554,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,453.70 : 927,680.55 = 369,621.70 : x
  2. Step 2: Convert to fraction form
    618,453.70/927,680.55 = 369,621.70/x
  3. Step 3: Cross multiply
    618,453.70x = 927,680.55 × 369,621.70
  4. Step 4: Simplify right side
    618,453.70x = 342,890,861,947.94
  5. Step 5: Solve for x
    x = 342,890,861,947.94/618,453.70
  6. Step 6: Final answer
    x = 554,432.55

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Similar ratio
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1.5x scale

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.