Home / 643,216.03-887,692.63-356,828.38

Finding the Fourth Proportional to 643,216.03, 887,692.63 and 356,828.38

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Solution

The fourth proportional to 643,216.03, 887,692.63 and 356,828.38 is: 492,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,216.03 : 887,692.63 = 356,828.38 : x
  2. Step 2: Convert to fraction form
    643,216.03/887,692.63 = 356,828.38/x
  3. Step 3: Cross multiply
    643,216.03x = 887,692.63 × 356,828.38
  4. Step 4: Simplify right side
    643,216.03x = 316,753,918,662.38
  5. Step 5: Solve for x
    x = 316,753,918,662.38/643,216.03
  6. Step 6: Final answer
    x = 492,453.40

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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.