Home / 7,978,720.38-11,011,170-4,447,066.50

Finding the Fourth Proportional to 7,978,720.38, 11,011,170 and 4,447,066.50

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Solution

The fourth proportional to 7,978,720.38, 11,011,170 and 4,447,066.50 is: 6,137,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,720.38 : 11,011,170 = 4,447,066.50 : x
  2. Step 2: Convert to fraction form
    7,978,720.38/11,011,170 = 4,447,066.50/x
  3. Step 3: Cross multiply
    7,978,720.38x = 11,011,170 × 4,447,066.50
  4. Step 4: Simplify right side
    7,978,720.38x = 48,967,405,232,805
  5. Step 5: Solve for x
    x = 48,967,405,232,805/7,978,720.38
  6. Step 6: Final answer
    x = 6,137,250.45

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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.