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Finding the Fourth Proportional to 587,280.79, 810,504.21 and 329,201.41

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Solution

The fourth proportional to 587,280.79, 810,504.21 and 329,201.41 is: 454,329.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,280.79 : 810,504.21 = 329,201.41 : x
  2. Step 2: Convert to fraction form
    587,280.79/810,504.21 = 329,201.41/x
  3. Step 3: Cross multiply
    587,280.79x = 810,504.21 × 329,201.41
  4. Step 4: Simplify right side
    587,280.79x = 266,819,128,742.94
  5. Step 5: Solve for x
    x = 266,819,128,742.94/587,280.79
  6. Step 6: Final answer
    x = 454,329.74

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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.