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Finding the Fourth Proportional to 723,771.72, 998,811 and 401,502.96

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Solution

The fourth proportional to 723,771.72, 998,811 and 401,502.96 is: 554,077.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,771.72 : 998,811 = 401,502.96 : x
  2. Step 2: Convert to fraction form
    723,771.72/998,811 = 401,502.96/x
  3. Step 3: Cross multiply
    723,771.72x = 998,811 × 401,502.96
  4. Step 4: Simplify right side
    723,771.72x = 401,025,572,980.56
  5. Step 5: Solve for x
    x = 401,025,572,980.56/723,771.72
  6. Step 6: Final answer
    x = 554,077.43

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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.