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Finding the Fourth Proportional to 587,426.40, 880,448.40 and 306,799.20

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Solution

The fourth proportional to 587,426.40, 880,448.40 and 306,799.20 is: 459,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,426.40 : 880,448.40 = 306,799.20 : x
  2. Step 2: Convert to fraction form
    587,426.40/880,448.40 = 306,799.20/x
  3. Step 3: Cross multiply
    587,426.40x = 880,448.40 × 306,799.20
  4. Step 4: Simplify right side
    587,426.40x = 270,120,864,761.28
  5. Step 5: Solve for x
    x = 270,120,864,761.28/587,426.40
  6. Step 6: Final answer
    x = 459,837.80

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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.