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Finding the Fourth Proportional to 511,618.33, 767,959.76 and 376,834.60

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Solution

The fourth proportional to 511,618.33, 767,959.76 and 376,834.60 is: 565,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,618.33 : 767,959.76 = 376,834.60 : x
  2. Step 2: Convert to fraction form
    511,618.33/767,959.76 = 376,834.60/x
  3. Step 3: Cross multiply
    511,618.33x = 767,959.76 × 376,834.60
  4. Step 4: Simplify right side
    511,618.33x = 289,393,805,498.11
  5. Step 5: Solve for x
    x = 289,393,805,498.11/511,618.33
  6. Step 6: Final answer
    x = 565,643.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.