Home / 1,347,927.80-2,021,891.70-639,339.80

Finding the Fourth Proportional to 1,347,927.80, 2,021,891.70 and 639,339.80

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Solution

The fourth proportional to 1,347,927.80, 2,021,891.70 and 639,339.80 is: 959,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,927.80 : 2,021,891.70 = 639,339.80 : x
  2. Step 2: Convert to fraction form
    1,347,927.80/2,021,891.70 = 639,339.80/x
  3. Step 3: Cross multiply
    1,347,927.80x = 2,021,891.70 × 639,339.80
  4. Step 4: Simplify right side
    1,347,927.80x = 1,292,675,835,099.66
  5. Step 5: Solve for x
    x = 1,292,675,835,099.66/1,347,927.80
  6. Step 6: Final answer
    x = 959,009.70

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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.