Home / 641,689.62-964,279.17-342,381.66

Finding the Fourth Proportional to 641,689.62, 964,279.17 and 342,381.66

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Solution

The fourth proportional to 641,689.62, 964,279.17 and 342,381.66 is: 514,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,689.62 : 964,279.17 = 342,381.66 : x
  2. Step 2: Convert to fraction form
    641,689.62/964,279.17 = 342,381.66/x
  3. Step 3: Cross multiply
    641,689.62x = 964,279.17 × 342,381.66
  4. Step 4: Simplify right side
    641,689.62x = 330,151,502,928.02
  5. Step 5: Solve for x
    x = 330,151,502,928.02/641,689.62
  6. Step 6: Final answer
    x = 514,503.42

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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.