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Finding the Fourth Proportional to 624,644.15, 862,007.86 and 338,164.16

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Solution

The fourth proportional to 624,644.15, 862,007.86 and 338,164.16 is: 466,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,644.15 : 862,007.86 = 338,164.16 : x
  2. Step 2: Convert to fraction form
    624,644.15/862,007.86 = 338,164.16/x
  3. Step 3: Cross multiply
    624,644.15x = 862,007.86 × 338,164.16
  4. Step 4: Simplify right side
    624,644.15x = 291,500,162,199.48
  5. Step 5: Solve for x
    x = 291,500,162,199.48/624,644.15
  6. Step 6: Final answer
    x = 466,665.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.