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Finding the Fourth Proportional to 6,872,649.60, 10,308,974.40 and 3,991,058.40

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Solution

The fourth proportional to 6,872,649.60, 10,308,974.40 and 3,991,058.40 is: 5,986,587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872,649.60 : 10,308,974.40 = 3,991,058.40 : x
  2. Step 2: Convert to fraction form
    6,872,649.60/10,308,974.40 = 3,991,058.40/x
  3. Step 3: Cross multiply
    6,872,649.60x = 10,308,974.40 × 3,991,058.40
  4. Step 4: Simplify right side
    6,872,649.60x = 41,143,718,874,504.96
  5. Step 5: Solve for x
    x = 41,143,718,874,504.96/6,872,649.60
  6. Step 6: Final answer
    x = 5,986,587.60

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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.