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Finding the Fourth Proportional to 8,900,485.70, 12,489,023.50 and 8,900,485.70

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Solution

The fourth proportional to 8,900,485.70, 12,489,023.50 and 8,900,485.70 is: 12,489,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900,485.70 : 12,489,023.50 = 8,900,485.70 : x
  2. Step 2: Convert to fraction form
    8,900,485.70/12,489,023.50 = 8,900,485.70/x
  3. Step 3: Cross multiply
    8,900,485.70x = 12,489,023.50 × 8,900,485.70
  4. Step 4: Simplify right side
    8,900,485.70x = 111,158,375,068,713.94
  5. Step 5: Solve for x
    x = 111,158,375,068,713.94/8,900,485.70
  6. Step 6: Final answer
    x = 12,489,023.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.