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Finding the Fourth Proportional to 425,678.92, 638,933.90 and 351,554.20

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Solution

The fourth proportional to 425,678.92, 638,933.90 and 351,554.20 is: 527,674.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,678.92 : 638,933.90 = 351,554.20 : x
  2. Step 2: Convert to fraction form
    425,678.92/638,933.90 = 351,554.20/x
  3. Step 3: Cross multiply
    425,678.92x = 638,933.90 × 351,554.20
  4. Step 4: Simplify right side
    425,678.92x = 224,619,896,067.38
  5. Step 5: Solve for x
    x = 224,619,896,067.38/425,678.92
  6. Step 6: Final answer
    x = 527,674.46

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1.5x scale

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.