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Finding the Fourth Proportional to 628,513.02, 867,348 and 342,026.82

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Solution

The fourth proportional to 628,513.02, 867,348 and 342,026.82 is: 471,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,513.02 : 867,348 = 342,026.82 : x
  2. Step 2: Convert to fraction form
    628,513.02/867,348 = 342,026.82/x
  3. Step 3: Cross multiply
    628,513.02x = 867,348 × 342,026.82
  4. Step 4: Simplify right side
    628,513.02x = 296,656,278,273.36
  5. Step 5: Solve for x
    x = 296,656,278,273.36/628,513.02
  6. Step 6: Final answer
    x = 471,997.03

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1.5x scale

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.