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Finding the Fourth Proportional to 587,428.40, 880,451.40 and 306,801.20

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Solution

The fourth proportional to 587,428.40, 880,451.40 and 306,801.20 is: 459,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,428.40 : 880,451.40 = 306,801.20 : x
  2. Step 2: Convert to fraction form
    587,428.40/880,451.40 = 306,801.20/x
  3. Step 3: Cross multiply
    587,428.40x = 880,451.40 × 306,801.20
  4. Step 4: Simplify right side
    587,428.40x = 270,123,546,061.68
  5. Step 5: Solve for x
    x = 270,123,546,061.68/587,428.40
  6. Step 6: Final answer
    x = 459,840.80

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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.