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Finding the Fourth Proportional to 612,670.20, 918,227.70 and 545,796.60

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Solution

The fourth proportional to 612,670.20, 918,227.70 and 545,796.60 is: 818,002.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,670.20 : 918,227.70 = 545,796.60 : x
  2. Step 2: Convert to fraction form
    612,670.20/918,227.70 = 545,796.60/x
  3. Step 3: Cross multiply
    612,670.20x = 918,227.70 × 545,796.60
  4. Step 4: Simplify right side
    612,670.20x = 501,165,556,685.82
  5. Step 5: Solve for x
    x = 501,165,556,685.82/612,670.20
  6. Step 6: Final answer
    x = 818,002.18

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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.