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Finding the Fourth Proportional to 389,423.28, 580,697.52 and 375,546.63

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Solution

The fourth proportional to 389,423.28, 580,697.52 and 375,546.63 is: 560,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,423.28 : 580,697.52 = 375,546.63 : x
  2. Step 2: Convert to fraction form
    389,423.28/580,697.52 = 375,546.63/x
  3. Step 3: Cross multiply
    389,423.28x = 580,697.52 × 375,546.63
  4. Step 4: Simplify right side
    389,423.28x = 218,078,996,685.36
  5. Step 5: Solve for x
    x = 218,078,996,685.36/389,423.28
  6. Step 6: Final answer
    x = 560,005.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.