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Finding the Fourth Proportional to 489,576.86, 675,835.38 and 298,666.34

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Solution

The fourth proportional to 489,576.86, 675,835.38 and 298,666.34 is: 412,293.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,576.86 : 675,835.38 = 298,666.34 : x
  2. Step 2: Convert to fraction form
    489,576.86/675,835.38 = 298,666.34/x
  3. Step 3: Cross multiply
    489,576.86x = 675,835.38 × 298,666.34
  4. Step 4: Simplify right side
    489,576.86x = 201,849,279,387.11
  5. Step 5: Solve for x
    x = 201,849,279,387.11/489,576.86
  6. Step 6: Final answer
    x = 412,293.34

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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.