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Finding the Fourth Proportional to 624,879.82, 862,332.42 and 338,399.83

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Solution

The fourth proportional to 624,879.82, 862,332.42 and 338,399.83 is: 466,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,879.82 : 862,332.42 = 338,399.83 : x
  2. Step 2: Convert to fraction form
    624,879.82/862,332.42 = 338,399.83/x
  3. Step 3: Cross multiply
    624,879.82x = 862,332.42 × 338,399.83
  4. Step 4: Simplify right side
    624,879.82x = 291,813,144,331.49
  5. Step 5: Solve for x
    x = 291,813,144,331.49/624,879.82
  6. Step 6: Final answer
    x = 466,990.83

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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.