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Finding the Fourth Proportional to 624,943.62, 862,421.94 and 338,463.72

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Solution

The fourth proportional to 624,943.62, 862,421.94 and 338,463.72 is: 467,079.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,943.62 : 862,421.94 = 338,463.72 : x
  2. Step 2: Convert to fraction form
    624,943.62/862,421.94 = 338,463.72/x
  3. Step 3: Cross multiply
    624,943.62x = 862,421.94 × 338,463.72
  4. Step 4: Simplify right side
    624,943.62x = 291,898,538,022.02
  5. Step 5: Solve for x
    x = 291,898,538,022.02/624,943.62
  6. Step 6: Final answer
    x = 467,079.80

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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.