Home / 1,131,123.20-1,696,101.60-420,785.60

Finding the Fourth Proportional to 1,131,123.20, 1,696,101.60 and 420,785.60

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Solution

The fourth proportional to 1,131,123.20, 1,696,101.60 and 420,785.60 is: 630,961.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,123.20 : 1,696,101.60 = 420,785.60 : x
  2. Step 2: Convert to fraction form
    1,131,123.20/1,696,101.60 = 420,785.60/x
  3. Step 3: Cross multiply
    1,131,123.20x = 1,696,101.60 × 420,785.60
  4. Step 4: Simplify right side
    1,131,123.20x = 713,695,129,416.96
  5. Step 5: Solve for x
    x = 713,695,129,416.96/1,131,123.20
  6. Step 6: Final answer
    x = 630,961.45

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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.