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Finding the Fourth Proportional to 6,388,362.65, 8,819,919.83 and 4,066,565.69

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Solution

The fourth proportional to 6,388,362.65, 8,819,919.83 and 4,066,565.69 is: 5,614,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388,362.65 : 8,819,919.83 = 4,066,565.69 : x
  2. Step 2: Convert to fraction form
    6,388,362.65/8,819,919.83 = 4,066,565.69/x
  3. Step 3: Cross multiply
    6,388,362.65x = 8,819,919.83 × 4,066,565.69
  4. Step 4: Simplify right side
    6,388,362.65x = 35,866,783,369,228.63
  5. Step 5: Solve for x
    x = 35,866,783,369,228.63/6,388,362.65
  6. Step 6: Final answer
    x = 5,614,393.76

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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.