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Finding the Fourth Proportional to 559,478.64, 772,366.44 and 379,143.44

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Solution

The fourth proportional to 559,478.64, 772,366.44 and 379,143.44 is: 523,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,478.64 : 772,366.44 = 379,143.44 : x
  2. Step 2: Convert to fraction form
    559,478.64/772,366.44 = 379,143.44/x
  3. Step 3: Cross multiply
    559,478.64x = 772,366.44 × 379,143.44
  4. Step 4: Simplify right side
    559,478.64x = 292,837,669,002.15
  5. Step 5: Solve for x
    x = 292,837,669,002.15/559,478.64
  6. Step 6: Final answer
    x = 523,411.71

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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.