Home / 628,736.28-867,656.16-342,258.54

Finding the Fourth Proportional to 628,736.28, 867,656.16 and 342,258.54

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Solution

The fourth proportional to 628,736.28, 867,656.16 and 342,258.54 is: 472,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,736.28 : 867,656.16 = 342,258.54 : x
  2. Step 2: Convert to fraction form
    628,736.28/867,656.16 = 342,258.54/x
  3. Step 3: Cross multiply
    628,736.28x = 867,656.16 × 342,258.54
  4. Step 4: Simplify right side
    628,736.28x = 296,962,730,543.61
  5. Step 5: Solve for x
    x = 296,962,730,543.61/628,736.28
  6. Step 6: Final answer
    x = 472,316.84

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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.