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Finding the Fourth Proportional to 778,912.20, 1,093,426.20 and 778,912.20

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Solution

The fourth proportional to 778,912.20, 1,093,426.20 and 778,912.20 is: 1,093,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,912.20 : 1,093,426.20 = 778,912.20 : x
  2. Step 2: Convert to fraction form
    778,912.20/1,093,426.20 = 778,912.20/x
  3. Step 3: Cross multiply
    778,912.20x = 1,093,426.20 × 778,912.20
  4. Step 4: Simplify right side
    778,912.20x = 851,683,006,979.64
  5. Step 5: Solve for x
    x = 851,683,006,979.64/778,912.20
  6. Step 6: Final answer
    x = 1,093,426.20

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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.