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Finding the Fourth Proportional to 628,648.84, 867,535.26 and 342,170.89

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Solution

The fourth proportional to 628,648.84, 867,535.26 and 342,170.89 is: 472,195.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,648.84 : 867,535.26 = 342,170.89 : x
  2. Step 2: Convert to fraction form
    628,648.84/867,535.26 = 342,170.89/x
  3. Step 3: Cross multiply
    628,648.84x = 867,535.26 × 342,170.89
  4. Step 4: Simplify right side
    628,648.84x = 296,845,312,020.58
  5. Step 5: Solve for x
    x = 296,845,312,020.58/628,648.84
  6. Step 6: Final answer
    x = 472,195.75

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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.