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Finding the Fourth Proportional to 672,087.92, 927,474.12 and 385,653.08

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Solution

The fourth proportional to 672,087.92, 927,474.12 and 385,653.08 is: 532,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,087.92 : 927,474.12 = 385,653.08 : x
  2. Step 2: Convert to fraction form
    672,087.92/927,474.12 = 385,653.08/x
  3. Step 3: Cross multiply
    672,087.92x = 927,474.12 × 385,653.08
  4. Step 4: Simplify right side
    672,087.92x = 357,683,250,998.29
  5. Step 5: Solve for x
    x = 357,683,250,998.29/672,087.92
  6. Step 6: Final answer
    x = 532,197.11

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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.