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Finding the Fourth Proportional to 666,534.21, 919,817.82 and 364,728.21

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Solution

The fourth proportional to 666,534.21, 919,817.82 and 364,728.21 is: 503,325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,534.21 : 919,817.82 = 364,728.21 : x
  2. Step 2: Convert to fraction form
    666,534.21/919,817.82 = 364,728.21/x
  3. Step 3: Cross multiply
    666,534.21x = 919,817.82 × 364,728.21
  4. Step 4: Simplify right side
    666,534.21x = 335,483,507,014.70
  5. Step 5: Solve for x
    x = 335,483,507,014.70/666,534.21
  6. Step 6: Final answer
    x = 503,325.26

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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.