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Finding the Fourth Proportional to 672,951.27, 928,639.99 and 401,013.11

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Solution

The fourth proportional to 672,951.27, 928,639.99 and 401,013.11 is: 553,378.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,951.27 : 928,639.99 = 401,013.11 : x
  2. Step 2: Convert to fraction form
    672,951.27/928,639.99 = 401,013.11/x
  3. Step 3: Cross multiply
    672,951.27x = 928,639.99 × 401,013.11
  4. Step 4: Simplify right side
    672,951.27x = 372,396,813,283.14
  5. Step 5: Solve for x
    x = 372,396,813,283.14/672,951.27
  6. Step 6: Final answer
    x = 553,378.57

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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.