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Finding the Fourth Proportional to 543,278.53, 749,771.81 and 316,996.93

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Solution

The fourth proportional to 543,278.53, 749,771.81 and 316,996.93 is: 437,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,278.53 : 749,771.81 = 316,996.93 : x
  2. Step 2: Convert to fraction form
    543,278.53/749,771.81 = 316,996.93/x
  3. Step 3: Cross multiply
    543,278.53x = 749,771.81 × 316,996.93
  4. Step 4: Simplify right side
    543,278.53x = 237,675,361,970.54
  5. Step 5: Solve for x
    x = 237,675,361,970.54/543,278.53
  6. Step 6: Final answer
    x = 437,483.44

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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.