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Finding the Fourth Proportional to 675,930.18, 932,719.86 and 403,943.93

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Solution

The fourth proportional to 675,930.18, 932,719.86 and 403,943.93 is: 557,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,930.18 : 932,719.86 = 403,943.93 : x
  2. Step 2: Convert to fraction form
    675,930.18/932,719.86 = 403,943.93/x
  3. Step 3: Cross multiply
    675,930.18x = 932,719.86 × 403,943.93
  4. Step 4: Simplify right side
    675,930.18x = 376,766,525,837.45
  5. Step 5: Solve for x
    x = 376,766,525,837.45/675,930.18
  6. Step 6: Final answer
    x = 557,404.50

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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.