Home / 12,478,546.70-18,703,074.45-5,290,066.70

Finding the Fourth Proportional to 12,478,546.70, 18,703,074.45 and 5,290,066.70

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Solution

The fourth proportional to 12,478,546.70, 18,703,074.45 and 5,290,066.70 is: 7,928,848.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,546.70 : 18,703,074.45 = 5,290,066.70 : x
  2. Step 2: Convert to fraction form
    12,478,546.70/18,703,074.45 = 5,290,066.70/x
  3. Step 3: Cross multiply
    12,478,546.70x = 18,703,074.45 × 5,290,066.70
  4. Step 4: Simplify right side
    12,478,546.70x = 98,940,511,335,565.81
  5. Step 5: Solve for x
    x = 98,940,511,335,565.81/12,478,546.70
  6. Step 6: Final answer
    x = 7,928,848.90

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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.