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Finding the Fourth Proportional to 425,432.86, 587,247.77 and 380,031.95

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Solution

The fourth proportional to 425,432.86, 587,247.77 and 380,031.95 is: 524,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,432.86 : 587,247.77 = 380,031.95 : x
  2. Step 2: Convert to fraction form
    425,432.86/587,247.77 = 380,031.95/x
  3. Step 3: Cross multiply
    425,432.86x = 587,247.77 × 380,031.95
  4. Step 4: Simplify right side
    425,432.86x = 223,172,917,584.45
  5. Step 5: Solve for x
    x = 223,172,917,584.45/425,432.86
  6. Step 6: Final answer
    x = 524,578.47

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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.