Home / 1,131,122.70-1,696,100.85-420,785.10

Finding the Fourth Proportional to 1,131,122.70, 1,696,100.85 and 420,785.10

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Solution

The fourth proportional to 1,131,122.70, 1,696,100.85 and 420,785.10 is: 630,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,122.70 : 1,696,100.85 = 420,785.10 : x
  2. Step 2: Convert to fraction form
    1,131,122.70/1,696,100.85 = 420,785.10/x
  3. Step 3: Cross multiply
    1,131,122.70x = 1,696,100.85 × 420,785.10
  4. Step 4: Simplify right side
    1,131,122.70x = 713,693,965,777.34
  5. Step 5: Solve for x
    x = 713,693,965,777.34/1,131,122.70
  6. Step 6: Final answer
    x = 630,960.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.