Home / 628,565.26-867,403.40-342,079.20

Finding the Fourth Proportional to 628,565.26, 867,403.40 and 342,079.20

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Solution

The fourth proportional to 628,565.26, 867,403.40 and 342,079.20 is: 472,060.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,565.26 : 867,403.40 = 342,079.20 : x
  2. Step 2: Convert to fraction form
    628,565.26/867,403.40 = 342,079.20/x
  3. Step 3: Cross multiply
    628,565.26x = 867,403.40 × 342,079.20
  4. Step 4: Simplify right side
    628,565.26x = 296,720,661,149.28
  5. Step 5: Solve for x
    x = 296,720,661,149.28/628,565.26
  6. Step 6: Final answer
    x = 472,060.23

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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.