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Finding the Fourth Proportional to 543,838.78, 750,566.72 and 328,980.39

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Solution

The fourth proportional to 543,838.78, 750,566.72 and 328,980.39 is: 454,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,838.78 : 750,566.72 = 328,980.39 : x
  2. Step 2: Convert to fraction form
    543,838.78/750,566.72 = 328,980.39/x
  3. Step 3: Cross multiply
    543,838.78x = 750,566.72 × 328,980.39
  4. Step 4: Simplify right side
    543,838.78x = 246,921,732,266.62
  5. Step 5: Solve for x
    x = 246,921,732,266.62/543,838.78
  6. Step 6: Final answer
    x = 454,034.80

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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.