Home / 628,906.28-867,881.99-342,426.35

Finding the Fourth Proportional to 628,906.28, 867,881.99 and 342,426.35

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Solution

The fourth proportional to 628,906.28, 867,881.99 and 342,426.35 is: 472,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,906.28 : 867,881.99 = 342,426.35 : x
  2. Step 2: Convert to fraction form
    628,906.28/867,881.99 = 342,426.35/x
  3. Step 3: Cross multiply
    628,906.28x = 867,881.99 × 342,426.35
  4. Step 4: Simplify right side
    628,906.28x = 297,185,665,092.21
  5. Step 5: Solve for x
    x = 297,185,665,092.21/628,906.28
  6. Step 6: Final answer
    x = 472,543.65

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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.