Home / 726,004.08-1,001,909.79-399,330.86

Finding the Fourth Proportional to 726,004.08, 1,001,909.79 and 399,330.86

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Solution

The fourth proportional to 726,004.08, 1,001,909.79 and 399,330.86 is: 551,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,004.08 : 1,001,909.79 = 399,330.86 : x
  2. Step 2: Convert to fraction form
    726,004.08/1,001,909.79 = 399,330.86/x
  3. Step 3: Cross multiply
    726,004.08x = 1,001,909.79 × 399,330.86
  4. Step 4: Simplify right side
    726,004.08x = 400,093,493,073.57
  5. Step 5: Solve for x
    x = 400,093,493,073.57/726,004.08
  6. Step 6: Final answer
    x = 551,089.87

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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.