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Finding the Fourth Proportional to 2,783,641.20, 3,888,699.60 and 2,783,641.20

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Solution

The fourth proportional to 2,783,641.20, 3,888,699.60 and 2,783,641.20 is: 3,888,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783,641.20 : 3,888,699.60 = 2,783,641.20 : x
  2. Step 2: Convert to fraction form
    2,783,641.20/3,888,699.60 = 2,783,641.20/x
  3. Step 3: Cross multiply
    2,783,641.20x = 3,888,699.60 × 2,783,641.20
  4. Step 4: Simplify right side
    2,783,641.20x = 10,824,744,420,983.52
  5. Step 5: Solve for x
    x = 10,824,744,420,983.52/2,783,641.20
  6. Step 6: Final answer
    x = 3,888,699.60

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Double scale
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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.