Home / 812,946.32-1,121,850.72-490,670

Finding the Fourth Proportional to 812,946.32, 1,121,850.72 and 490,670

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Solution

The fourth proportional to 812,946.32, 1,121,850.72 and 490,670 is: 677,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,946.32 : 1,121,850.72 = 490,670 : x
  2. Step 2: Convert to fraction form
    812,946.32/1,121,850.72 = 490,670/x
  3. Step 3: Cross multiply
    812,946.32x = 1,121,850.72 × 490,670
  4. Step 4: Simplify right side
    812,946.32x = 550,458,492,782.40
  5. Step 5: Solve for x
    x = 550,458,492,782.40/812,946.32
  6. Step 6: Final answer
    x = 677,115.42

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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.