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Finding the Fourth Proportional to 8,303,807.40, 12,457,679.40 and 4,260,919.20

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Solution

The fourth proportional to 8,303,807.40, 12,457,679.40 and 4,260,919.20 is: 6,392,388.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,303,807.40 : 12,457,679.40 = 4,260,919.20 : x
  2. Step 2: Convert to fraction form
    8,303,807.40/12,457,679.40 = 4,260,919.20/x
  3. Step 3: Cross multiply
    8,303,807.40x = 12,457,679.40 × 4,260,919.20
  4. Step 4: Simplify right side
    8,303,807.40x = 53,081,165,342,904.48
  5. Step 5: Solve for x
    x = 53,081,165,342,904.48/8,303,807.40
  6. Step 6: Final answer
    x = 6,392,388.79

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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.