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Finding the Fourth Proportional to 654,689.13, 903,886.04 and 448,302.85

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Solution

The fourth proportional to 654,689.13, 903,886.04 and 448,302.85 is: 618,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,689.13 : 903,886.04 = 448,302.85 : x
  2. Step 2: Convert to fraction form
    654,689.13/903,886.04 = 448,302.85/x
  3. Step 3: Cross multiply
    654,689.13x = 903,886.04 × 448,302.85
  4. Step 4: Simplify right side
    654,689.13x = 405,214,689,230.91
  5. Step 5: Solve for x
    x = 405,214,689,230.91/654,689.13
  6. Step 6: Final answer
    x = 618,942.14

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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.