Home / 628,609.91-867,481.63-342,132.05

Finding the Fourth Proportional to 628,609.91, 867,481.63 and 342,132.05

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Solution

The fourth proportional to 628,609.91, 867,481.63 and 342,132.05 is: 472,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,609.91 : 867,481.63 = 342,132.05 : x
  2. Step 2: Convert to fraction form
    628,609.91/867,481.63 = 342,132.05/x
  3. Step 3: Cross multiply
    628,609.91x = 867,481.63 × 342,132.05
  4. Step 4: Simplify right side
    628,609.91x = 296,793,264,071.83
  5. Step 5: Solve for x
    x = 296,793,264,071.83/628,609.91
  6. Step 6: Final answer
    x = 472,142.20

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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.