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Finding the Fourth Proportional to 666,712.50, 920,069.73 and 364,912.98

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Solution

The fourth proportional to 666,712.50, 920,069.73 and 364,912.98 is: 503,583.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,712.50 : 920,069.73 = 364,912.98 : x
  2. Step 2: Convert to fraction form
    666,712.50/920,069.73 = 364,912.98/x
  3. Step 3: Cross multiply
    666,712.50x = 920,069.73 × 364,912.98
  4. Step 4: Simplify right side
    666,712.50x = 335,745,386,982.10
  5. Step 5: Solve for x
    x = 335,745,386,982.10/666,712.50
  6. Step 6: Final answer
    x = 503,583.46

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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.