Home / 642,201.46-886,267.19-355,721.51

Finding the Fourth Proportional to 642,201.46, 886,267.19 and 355,721.51

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Solution

The fourth proportional to 642,201.46, 886,267.19 and 355,721.51 is: 490,911.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,201.46 : 886,267.19 = 355,721.51 : x
  2. Step 2: Convert to fraction form
    642,201.46/886,267.19 = 355,721.51/x
  3. Step 3: Cross multiply
    642,201.46x = 886,267.19 × 355,721.51
  4. Step 4: Simplify right side
    642,201.46x = 315,264,301,311.65
  5. Step 5: Solve for x
    x = 315,264,301,311.65/642,201.46
  6. Step 6: Final answer
    x = 490,911.85

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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.