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Finding the Fourth Proportional to 666,180, 919,328.40 and 364,374

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Solution

The fourth proportional to 666,180, 919,328.40 and 364,374 is: 502,836.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,180 : 919,328.40 = 364,374 : x
  2. Step 2: Convert to fraction form
    666,180/919,328.40 = 364,374/x
  3. Step 3: Cross multiply
    666,180x = 919,328.40 × 364,374
  4. Step 4: Simplify right side
    666,180x = 334,979,366,421.60
  5. Step 5: Solve for x
    x = 334,979,366,421.60/666,180
  6. Step 6: Final answer
    x = 502,836.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.