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Finding the Fourth Proportional to 543,278.28, 749,771.46 and 316,996.68

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Solution

The fourth proportional to 543,278.28, 749,771.46 and 316,996.68 is: 437,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,278.28 : 749,771.46 = 316,996.68 : x
  2. Step 2: Convert to fraction form
    543,278.28/749,771.46 = 316,996.68/x
  3. Step 3: Cross multiply
    543,278.28x = 749,771.46 × 316,996.68
  4. Step 4: Simplify right side
    543,278.28x = 237,675,063,578.75
  5. Step 5: Solve for x
    x = 237,675,063,578.75/543,278.28
  6. Step 6: Final answer
    x = 437,483.10

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1.5x scale

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.