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Finding the Fourth Proportional to 628,611.29, 867,483.53 and 342,133.43

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Solution

The fourth proportional to 628,611.29, 867,483.53 and 342,133.43 is: 472,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,611.29 : 867,483.53 = 342,133.43 : x
  2. Step 2: Convert to fraction form
    628,611.29/867,483.53 = 342,133.43/x
  3. Step 3: Cross multiply
    628,611.29x = 867,483.53 × 342,133.43
  4. Step 4: Simplify right side
    628,611.29x = 296,795,109,539.32
  5. Step 5: Solve for x
    x = 296,795,109,539.32/628,611.29
  6. Step 6: Final answer
    x = 472,144.10

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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.