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Finding the Fourth Proportional to 666,902.44, 920,348.58 and 365,098.60

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Solution

The fourth proportional to 666,902.44, 920,348.58 and 365,098.60 is: 503,848.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,902.44 : 920,348.58 = 365,098.60 : x
  2. Step 2: Convert to fraction form
    666,902.44/920,348.58 = 365,098.60/x
  3. Step 3: Cross multiply
    666,902.44x = 920,348.58 × 365,098.60
  4. Step 4: Simplify right side
    666,902.44x = 336,017,978,069.99
  5. Step 5: Solve for x
    x = 336,017,978,069.99/666,902.44
  6. Step 6: Final answer
    x = 503,848.78

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1.5x scale

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.