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Finding the Fourth Proportional to 612,706.20, 918,937.92 and 582,325.80

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Solution

The fourth proportional to 612,706.20, 918,937.92 and 582,325.80 is: 873,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,706.20 : 918,937.92 = 582,325.80 : x
  2. Step 2: Convert to fraction form
    612,706.20/918,937.92 = 582,325.80/x
  3. Step 3: Cross multiply
    612,706.20x = 918,937.92 × 582,325.80
  4. Step 4: Simplify right side
    612,706.20x = 535,121,259,414.34
  5. Step 5: Solve for x
    x = 535,121,259,414.34/612,706.20
  6. Step 6: Final answer
    x = 873,373.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.