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Finding the Fourth Proportional to 7,655,807.60, 11,471,901.60 and 6,640,164.80

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Solution

The fourth proportional to 7,655,807.60, 11,471,901.60 and 6,640,164.80 is: 9,950,004.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,655,807.60 : 11,471,901.60 = 6,640,164.80 : x
  2. Step 2: Convert to fraction form
    7,655,807.60/11,471,901.60 = 6,640,164.80/x
  3. Step 3: Cross multiply
    7,655,807.60x = 11,471,901.60 × 6,640,164.80
  4. Step 4: Simplify right side
    7,655,807.60x = 76,175,317,193,383.67
  5. Step 5: Solve for x
    x = 76,175,317,193,383.67/7,655,807.60
  6. Step 6: Final answer
    x = 9,950,004.12

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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.