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Finding the Fourth Proportional to 628,504.65, 867,334.80 and 342,024.66

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Solution

The fourth proportional to 628,504.65, 867,334.80 and 342,024.66 is: 471,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,504.65 : 867,334.80 = 342,024.66 : x
  2. Step 2: Convert to fraction form
    628,504.65/867,334.80 = 342,024.66/x
  3. Step 3: Cross multiply
    628,504.65x = 867,334.80 × 342,024.66
  4. Step 4: Simplify right side
    628,504.65x = 296,649,890,076.17
  5. Step 5: Solve for x
    x = 296,649,890,076.17/628,504.65
  6. Step 6: Final answer
    x = 471,993.15

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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.