Home / 920,081.67-1,269,623.64-678,494.31

Finding the Fourth Proportional to 920,081.67, 1,269,623.64 and 678,494.31

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Solution

The fourth proportional to 920,081.67, 1,269,623.64 and 678,494.31 is: 936,256.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,081.67 : 1,269,623.64 = 678,494.31 : x
  2. Step 2: Convert to fraction form
    920,081.67/1,269,623.64 = 678,494.31/x
  3. Step 3: Cross multiply
    920,081.67x = 1,269,623.64 × 678,494.31
  4. Step 4: Simplify right side
    920,081.67x = 861,432,415,581.49
  5. Step 5: Solve for x
    x = 861,432,415,581.49/920,081.67
  6. Step 6: Final answer
    x = 936,256.47

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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.