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Finding the Fourth Proportional to 6,396,963.60, 9,581,448.60 and 5,557,155.60

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Solution

The fourth proportional to 6,396,963.60, 9,581,448.60 and 5,557,155.60 is: 8,323,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,396,963.60 : 9,581,448.60 = 5,557,155.60 : x
  2. Step 2: Convert to fraction form
    6,396,963.60/9,581,448.60 = 5,557,155.60/x
  3. Step 3: Cross multiply
    6,396,963.60x = 9,581,448.60 × 5,557,155.60
  4. Step 4: Simplify right side
    6,396,963.60x = 53,245,600,743,602.16
  5. Step 5: Solve for x
    x = 53,245,600,743,602.16/6,396,963.60
  6. Step 6: Final answer
    x = 8,323,574.13

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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.