Home / 678,306.78-936,066.96-423,805.56

Finding the Fourth Proportional to 678,306.78, 936,066.96 and 423,805.56

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Solution

The fourth proportional to 678,306.78, 936,066.96 and 423,805.56 is: 584,853.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,306.78 : 936,066.96 = 423,805.56 : x
  2. Step 2: Convert to fraction form
    678,306.78/936,066.96 = 423,805.56/x
  3. Step 3: Cross multiply
    678,306.78x = 936,066.96 × 423,805.56
  4. Step 4: Simplify right side
    678,306.78x = 396,710,382,180.30
  5. Step 5: Solve for x
    x = 396,710,382,180.30/678,306.78
  6. Step 6: Final answer
    x = 584,853.92

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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.