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Finding the Fourth Proportional to 693,135.72, 956,516.73 and 387,216.48

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Solution

The fourth proportional to 693,135.72, 956,516.73 and 387,216.48 is: 534,352.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,135.72 : 956,516.73 = 387,216.48 : x
  2. Step 2: Convert to fraction form
    693,135.72/956,516.73 = 387,216.48/x
  3. Step 3: Cross multiply
    693,135.72x = 956,516.73 × 387,216.48
  4. Step 4: Simplify right side
    693,135.72x = 370,379,041,251.71
  5. Step 5: Solve for x
    x = 370,379,041,251.71/693,135.72
  6. Step 6: Final answer
    x = 534,352.84

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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.