Home / 641,955.20-885,898.11-355,475.31

Finding the Fourth Proportional to 641,955.20, 885,898.11 and 355,475.31

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Solution

The fourth proportional to 641,955.20, 885,898.11 and 355,475.31 is: 490,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,955.20 : 885,898.11 = 355,475.31 : x
  2. Step 2: Convert to fraction form
    641,955.20/885,898.11 = 355,475.31/x
  3. Step 3: Cross multiply
    641,955.20x = 885,898.11 × 355,475.31
  4. Step 4: Simplify right side
    641,955.20x = 314,914,905,280.66
  5. Step 5: Solve for x
    x = 314,914,905,280.66/641,955.20
  6. Step 6: Final answer
    x = 490,555.90

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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.