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Finding the Fourth Proportional to 667,796.80, 921,554.40 and 365,990.08

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Solution

The fourth proportional to 667,796.80, 921,554.40 and 365,990.08 is: 505,063.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,796.80 : 921,554.40 = 365,990.08 : x
  2. Step 2: Convert to fraction form
    667,796.80/921,554.40 = 365,990.08/x
  3. Step 3: Cross multiply
    667,796.80x = 921,554.40 × 365,990.08
  4. Step 4: Simplify right side
    667,796.80x = 337,279,768,580.35
  5. Step 5: Solve for x
    x = 337,279,768,580.35/667,796.80
  6. Step 6: Final answer
    x = 505,063.47

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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.