Home / 641,955.37-885,897.85-355,475.45

Finding the Fourth Proportional to 641,955.37, 885,897.85 and 355,475.45

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Solution

The fourth proportional to 641,955.37, 885,897.85 and 355,475.45 is: 490,555.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,955.37 : 885,897.85 = 355,475.45 : x
  2. Step 2: Convert to fraction form
    641,955.37/885,897.85 = 355,475.45/x
  3. Step 3: Cross multiply
    641,955.37x = 885,897.85 × 355,475.45
  4. Step 4: Simplify right side
    641,955.37x = 314,914,936,882.78
  5. Step 5: Solve for x
    x = 314,914,936,882.78/641,955.37
  6. Step 6: Final answer
    x = 490,555.81

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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.