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Finding the Fourth Proportional to 1,029,147, 1,420,222.86 and 626,739

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Solution

The fourth proportional to 1,029,147, 1,420,222.86 and 626,739 is: 864,899.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,147 : 1,420,222.86 = 626,739 : x
  2. Step 2: Convert to fraction form
    1,029,147/1,420,222.86 = 626,739/x
  3. Step 3: Cross multiply
    1,029,147x = 1,420,222.86 × 626,739
  4. Step 4: Simplify right side
    1,029,147x = 890,109,055,053.54
  5. Step 5: Solve for x
    x = 890,109,055,053.54/1,029,147
  6. Step 6: Final answer
    x = 864,899.82

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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.