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Finding the Fourth Proportional to 9,387,511.05, 12,978,457.07 and 6,936,255.93

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Solution

The fourth proportional to 9,387,511.05, 12,978,457.07 and 6,936,255.93 is: 9,589,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387,511.05 : 12,978,457.07 = 6,936,255.93 : x
  2. Step 2: Convert to fraction form
    9,387,511.05/12,978,457.07 = 6,936,255.93/x
  3. Step 3: Cross multiply
    9,387,511.05x = 12,978,457.07 × 6,936,255.93
  4. Step 4: Simplify right side
    9,387,511.05x = 90,021,899,814,037.92
  5. Step 5: Solve for x
    x = 90,021,899,814,037.92/9,387,511.05
  6. Step 6: Final answer
    x = 9,589,538.63

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1.5x scale

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.