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Finding the Fourth Proportional to 7,134,865.74, 9,846,064.78 and 3,871,597.48

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Solution

The fourth proportional to 7,134,865.74, 9,846,064.78 and 3,871,597.48 is: 5,342,777.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134,865.74 : 9,846,064.78 = 3,871,597.48 : x
  2. Step 2: Convert to fraction form
    7,134,865.74/9,846,064.78 = 3,871,597.48/x
  3. Step 3: Cross multiply
    7,134,865.74x = 9,846,064.78 × 3,871,597.48
  4. Step 4: Simplify right side
    7,134,865.74x = 38,119,999,590,164.75
  5. Step 5: Solve for x
    x = 38,119,999,590,164.75/7,134,865.74
  6. Step 6: Final answer
    x = 5,342,777.42

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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.