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Finding the Fourth Proportional to 638,007.24, 956,960.61 and 278,169.60

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Solution

The fourth proportional to 638,007.24, 956,960.61 and 278,169.60 is: 417,232.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,007.24 : 956,960.61 = 278,169.60 : x
  2. Step 2: Convert to fraction form
    638,007.24/956,960.61 = 278,169.60/x
  3. Step 3: Cross multiply
    638,007.24x = 956,960.61 × 278,169.60
  4. Step 4: Simplify right side
    638,007.24x = 266,197,350,099.46
  5. Step 5: Solve for x
    x = 266,197,350,099.46/638,007.24
  6. Step 6: Final answer
    x = 417,232.49

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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.