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Finding the Fourth Proportional to 2,123,440.80, 2,981,215.20 and 2,123,440.80

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Solution

The fourth proportional to 2,123,440.80, 2,981,215.20 and 2,123,440.80 is: 2,981,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123,440.80 : 2,981,215.20 = 2,123,440.80 : x
  2. Step 2: Convert to fraction form
    2,123,440.80/2,981,215.20 = 2,123,440.80/x
  3. Step 3: Cross multiply
    2,123,440.80x = 2,981,215.20 × 2,123,440.80
  4. Step 4: Simplify right side
    2,123,440.80x = 6,330,433,989,260.16
  5. Step 5: Solve for x
    x = 6,330,433,989,260.16/2,123,440.80
  6. Step 6: Final answer
    x = 2,981,215.20

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Half scale
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Double scale
Find fourth proportional to 2,123,441.80, 2,981,216.60 and 2,123,441.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.