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Finding the Fourth Proportional to 8,978,856.30, 13,468,284.45 and 8,837,138.70

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Solution

The fourth proportional to 8,978,856.30, 13,468,284.45 and 8,837,138.70 is: 13,255,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978,856.30 : 13,468,284.45 = 8,837,138.70 : x
  2. Step 2: Convert to fraction form
    8,978,856.30/13,468,284.45 = 8,837,138.70/x
  3. Step 3: Cross multiply
    8,978,856.30x = 13,468,284.45 × 8,837,138.70
  4. Step 4: Simplify right side
    8,978,856.30x = 119,021,097,735,703.20
  5. Step 5: Solve for x
    x = 119,021,097,735,703.20/8,978,856.30
  6. Step 6: Final answer
    x = 13,255,708.05

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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.