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Finding the Fourth Proportional to 666,793.56, 920,173.36 and 360,870.52

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Solution

The fourth proportional to 666,793.56, 920,173.36 and 360,870.52 is: 498,000.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,793.56 : 920,173.36 = 360,870.52 : x
  2. Step 2: Convert to fraction form
    666,793.56/920,173.36 = 360,870.52/x
  3. Step 3: Cross multiply
    666,793.56x = 920,173.36 × 360,870.52
  4. Step 4: Simplify right side
    666,793.56x = 332,063,438,913.35
  5. Step 5: Solve for x
    x = 332,063,438,913.35/666,793.56
  6. Step 6: Final answer
    x = 498,000.37

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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.