Home / 838,722.36-1,256,190.84-388,497.36

Finding the Fourth Proportional to 838,722.36, 1,256,190.84 and 388,497.36

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Solution

The fourth proportional to 838,722.36, 1,256,190.84 and 388,497.36 is: 581,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,722.36 : 1,256,190.84 = 388,497.36 : x
  2. Step 2: Convert to fraction form
    838,722.36/1,256,190.84 = 388,497.36/x
  3. Step 3: Cross multiply
    838,722.36x = 1,256,190.84 × 388,497.36
  4. Step 4: Simplify right side
    838,722.36x = 488,026,824,996.18
  5. Step 5: Solve for x
    x = 488,026,824,996.18/838,722.36
  6. Step 6: Final answer
    x = 581,869.34

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1.5x scale

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.