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Finding the Fourth Proportional to 3,947,668.72, 5,448,646.65 and 2,499,295.30

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Solution

The fourth proportional to 3,947,668.72, 5,448,646.65 and 2,499,295.30 is: 3,449,574.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947,668.72 : 5,448,646.65 = 2,499,295.30 : x
  2. Step 2: Convert to fraction form
    3,947,668.72/5,448,646.65 = 2,499,295.30/x
  3. Step 3: Cross multiply
    3,947,668.72x = 5,448,646.65 × 2,499,295.30
  4. Step 4: Simplify right side
    3,947,668.72x = 13,617,776,963,705.74
  5. Step 5: Solve for x
    x = 13,617,776,963,705.74/3,947,668.72
  6. Step 6: Final answer
    x = 3,449,574.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.