Home / 1,508,422.50-2,081,662.47-820,140.66

Finding the Fourth Proportional to 1,508,422.50, 2,081,662.47 and 820,140.66

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Solution

The fourth proportional to 1,508,422.50, 2,081,662.47 and 820,140.66 is: 1,131,815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508,422.50 : 2,081,662.47 = 820,140.66 : x
  2. Step 2: Convert to fraction form
    1,508,422.50/2,081,662.47 = 820,140.66/x
  3. Step 3: Cross multiply
    1,508,422.50x = 2,081,662.47 × 820,140.66
  4. Step 4: Simplify right side
    1,508,422.50x = 1,707,256,032,043.03
  5. Step 5: Solve for x
    x = 1,707,256,032,043.03/1,508,422.50
  6. Step 6: Final answer
    x = 1,131,815.54

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Double scale
Find fourth proportional to 1,508,423.50, 2,081,663.85 and 820,141.66
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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.