Home / 645,231.84-890,322.24-369,546.88

Finding the Fourth Proportional to 645,231.84, 890,322.24 and 369,546.88

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Solution

The fourth proportional to 645,231.84, 890,322.24 and 369,546.88 is: 509,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,231.84 : 890,322.24 = 369,546.88 : x
  2. Step 2: Convert to fraction form
    645,231.84/890,322.24 = 369,546.88/x
  3. Step 3: Cross multiply
    645,231.84x = 890,322.24 × 369,546.88
  4. Step 4: Simplify right side
    645,231.84x = 329,015,805,986.61
  5. Step 5: Solve for x
    x = 329,015,805,986.61/645,231.84
  6. Step 6: Final answer
    x = 509,918.74

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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.