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Finding the Fourth Proportional to 667,270.17, 920,744.42 and 380,773.17

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Solution

The fourth proportional to 667,270.17, 920,744.42 and 380,773.17 is: 525,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,270.17 : 920,744.42 = 380,773.17 : x
  2. Step 2: Convert to fraction form
    667,270.17/920,744.42 = 380,773.17/x
  3. Step 3: Cross multiply
    667,270.17x = 920,744.42 × 380,773.17
  4. Step 4: Simplify right side
    667,270.17x = 350,594,769,659.35
  5. Step 5: Solve for x
    x = 350,594,769,659.35/667,270.17
  6. Step 6: Final answer
    x = 525,416.52

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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.