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Finding the Fourth Proportional to 6,457,079.88, 8,914,189.86 and 5,003,512.20

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Solution

The fourth proportional to 6,457,079.88, 8,914,189.86 and 5,003,512.20 is: 6,907,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,457,079.88 : 8,914,189.86 = 5,003,512.20 : x
  2. Step 2: Convert to fraction form
    6,457,079.88/8,914,189.86 = 5,003,512.20/x
  3. Step 3: Cross multiply
    6,457,079.88x = 8,914,189.86 × 5,003,512.20
  4. Step 4: Simplify right side
    6,457,079.88x = 44,602,257,717,626.29
  5. Step 5: Solve for x
    x = 44,602,257,717,626.29/6,457,079.88
  6. Step 6: Final answer
    x = 6,907,496.66

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Double scale
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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.