Home / 628,563.26-867,400.64-342,077.20

Finding the Fourth Proportional to 628,563.26, 867,400.64 and 342,077.20

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Solution

The fourth proportional to 628,563.26, 867,400.64 and 342,077.20 is: 472,057.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,563.26 : 867,400.64 = 342,077.20 : x
  2. Step 2: Convert to fraction form
    628,563.26/867,400.64 = 342,077.20/x
  3. Step 3: Cross multiply
    628,563.26x = 867,400.64 × 342,077.20
  4. Step 4: Simplify right side
    628,563.26x = 296,717,982,209.41
  5. Step 5: Solve for x
    x = 296,717,982,209.41/628,563.26
  6. Step 6: Final answer
    x = 472,057.47

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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.