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Finding the Fourth Proportional to 893,324.90, 1,339,234.05 and 387,505.01

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Solution

The fourth proportional to 893,324.90, 1,339,234.05 and 387,505.01 is: 580,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,324.90 : 1,339,234.05 = 387,505.01 : x
  2. Step 2: Convert to fraction form
    893,324.90/1,339,234.05 = 387,505.01/x
  3. Step 3: Cross multiply
    893,324.90x = 1,339,234.05 × 387,505.01
  4. Step 4: Simplify right side
    893,324.90x = 518,959,908,738.82
  5. Step 5: Solve for x
    x = 518,959,908,738.82/893,324.90
  6. Step 6: Final answer
    x = 580,930.75

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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.