Home / 641,690.62-964,280.67-342,382.66

Finding the Fourth Proportional to 641,690.62, 964,280.67 and 342,382.66

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Solution

The fourth proportional to 641,690.62, 964,280.67 and 342,382.66 is: 514,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,690.62 : 964,280.67 = 342,382.66 : x
  2. Step 2: Convert to fraction form
    641,690.62/964,280.67 = 342,382.66/x
  3. Step 3: Cross multiply
    641,690.62x = 964,280.67 × 342,382.66
  4. Step 4: Simplify right side
    641,690.62x = 330,152,980,781.18
  5. Step 5: Solve for x
    x = 330,152,980,781.18/641,690.62
  6. Step 6: Final answer
    x = 514,504.92

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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.