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Finding the Fourth Proportional to 624,870.18, 862,321.68 and 338,390.73

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Solution

The fourth proportional to 624,870.18, 862,321.68 and 338,390.73 is: 466,979.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,870.18 : 862,321.68 = 338,390.73 : x
  2. Step 2: Convert to fraction form
    624,870.18/862,321.68 = 338,390.73/x
  3. Step 3: Cross multiply
    624,870.18x = 862,321.68 × 338,390.73
  4. Step 4: Simplify right side
    624,870.18x = 291,801,662,790.03
  5. Step 5: Solve for x
    x = 291,801,662,790.03/624,870.18
  6. Step 6: Final answer
    x = 466,979.66

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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.