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Finding the Fourth Proportional to 678,302.76, 936,061.44 and 423,801.56

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Solution

The fourth proportional to 678,302.76, 936,061.44 and 423,801.56 is: 584,848.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,302.76 : 936,061.44 = 423,801.56 : x
  2. Step 2: Convert to fraction form
    678,302.76/936,061.44 = 423,801.56/x
  3. Step 3: Cross multiply
    678,302.76x = 936,061.44 × 423,801.56
  4. Step 4: Simplify right side
    678,302.76x = 396,704,298,527.85
  5. Step 5: Solve for x
    x = 396,704,298,527.85/678,302.76
  6. Step 6: Final answer
    x = 584,848.42

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Double scale
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Similar ratio
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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.