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Finding the Fourth Proportional to 671,682.38, 926,921.68 and 369,876.38

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Solution

The fourth proportional to 671,682.38, 926,921.68 and 369,876.38 is: 510,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,682.38 : 926,921.68 = 369,876.38 : x
  2. Step 2: Convert to fraction form
    671,682.38/926,921.68 = 369,876.38/x
  3. Step 3: Cross multiply
    671,682.38x = 926,921.68 × 369,876.38
  4. Step 4: Simplify right side
    671,682.38x = 342,846,429,982.62
  5. Step 5: Solve for x
    x = 342,846,429,982.62/671,682.38
  6. Step 6: Final answer
    x = 510,429.40

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Double scale
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1.5x scale

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.