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Finding the Fourth Proportional to 5,005,978.74, 7,504,514.81 and 1,810,394.48

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Solution

The fourth proportional to 5,005,978.74, 7,504,514.81 and 1,810,394.48 is: 2,713,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,005,978.74 : 7,504,514.81 = 1,810,394.48 : x
  2. Step 2: Convert to fraction form
    5,005,978.74/7,504,514.81 = 1,810,394.48/x
  3. Step 3: Cross multiply
    5,005,978.74x = 7,504,514.81 × 1,810,394.48
  4. Step 4: Simplify right side
    5,005,978.74x = 13,586,132,203,600.54
  5. Step 5: Solve for x
    x = 13,586,132,203,600.54/5,005,978.74
  6. Step 6: Final answer
    x = 2,713,981.20

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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.