Home / 921,436.98-1,272,231.41-646,379.61

Finding the Fourth Proportional to 921,436.98, 1,272,231.41 and 646,379.61

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Solution

The fourth proportional to 921,436.98, 1,272,231.41 and 646,379.61 is: 892,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,436.98 : 1,272,231.41 = 646,379.61 : x
  2. Step 2: Convert to fraction form
    921,436.98/1,272,231.41 = 646,379.61/x
  3. Step 3: Cross multiply
    921,436.98x = 1,272,231.41 × 646,379.61
  4. Step 4: Simplify right side
    921,436.98x = 822,344,439,393.65
  5. Step 5: Solve for x
    x = 822,344,439,393.65/921,436.98
  6. Step 6: Final answer
    x = 892,458.69

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1.5x scale

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.