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Finding the Fourth Proportional to 667,322.19, 920,996.25 and 409,153.48

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Solution

The fourth proportional to 667,322.19, 920,996.25 and 409,153.48 is: 564,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,322.19 : 920,996.25 = 409,153.48 : x
  2. Step 2: Convert to fraction form
    667,322.19/920,996.25 = 409,153.48/x
  3. Step 3: Cross multiply
    667,322.19x = 920,996.25 × 409,153.48
  4. Step 4: Simplify right side
    667,322.19x = 376,828,816,917.63
  5. Step 5: Solve for x
    x = 376,828,816,917.63/667,322.19
  6. Step 6: Final answer
    x = 564,687.98

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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.