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Finding the Fourth Proportional to 2,739,628.80, 3,843,878.40 and 2,739,628.80

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Solution

The fourth proportional to 2,739,628.80, 3,843,878.40 and 2,739,628.80 is: 3,843,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739,628.80 : 3,843,878.40 = 2,739,628.80 : x
  2. Step 2: Convert to fraction form
    2,739,628.80/3,843,878.40 = 2,739,628.80/x
  3. Step 3: Cross multiply
    2,739,628.80x = 3,843,878.40 × 2,739,628.80
  4. Step 4: Simplify right side
    2,739,628.80x = 10,530,799,968,337.92
  5. Step 5: Solve for x
    x = 10,530,799,968,337.92/2,739,628.80
  6. Step 6: Final answer
    x = 3,843,878.40

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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.