Home / 920,081.17-1,269,622.95-678,493.81

Finding the Fourth Proportional to 920,081.17, 1,269,622.95 and 678,493.81

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Solution

The fourth proportional to 920,081.17, 1,269,622.95 and 678,493.81 is: 936,255.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,081.17 : 1,269,622.95 = 678,493.81 : x
  2. Step 2: Convert to fraction form
    920,081.17/1,269,622.95 = 678,493.81/x
  3. Step 3: Cross multiply
    920,081.17x = 1,269,622.95 × 678,493.81
  4. Step 4: Simplify right side
    920,081.17x = 861,431,306,260.83
  5. Step 5: Solve for x
    x = 861,431,306,260.83/920,081.17
  6. Step 6: Final answer
    x = 936,255.78

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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.