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Finding the Fourth Proportional to 667,811.19, 999,322.32 and 578,162.27

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Solution

The fourth proportional to 667,811.19, 999,322.32 and 578,162.27 is: 865,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,811.19 : 999,322.32 = 578,162.27 : x
  2. Step 2: Convert to fraction form
    667,811.19/999,322.32 = 578,162.27/x
  3. Step 3: Cross multiply
    667,811.19x = 999,322.32 × 578,162.27
  4. Step 4: Simplify right side
    667,811.19x = 577,770,465,659.28
  5. Step 5: Solve for x
    x = 577,770,465,659.28/667,811.19
  6. Step 6: Final answer
    x = 865,170.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.