Home / 643,977.33-888,692.68-353,601.44

Finding the Fourth Proportional to 643,977.33, 888,692.68 and 353,601.44

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Solution

The fourth proportional to 643,977.33, 888,692.68 and 353,601.44 is: 487,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,977.33 : 888,692.68 = 353,601.44 : x
  2. Step 2: Convert to fraction form
    643,977.33/888,692.68 = 353,601.44/x
  3. Step 3: Cross multiply
    643,977.33x = 888,692.68 × 353,601.44
  4. Step 4: Simplify right side
    643,977.33x = 314,243,011,365.46
  5. Step 5: Solve for x
    x = 314,243,011,365.46/643,977.33
  6. Step 6: Final answer
    x = 487,972.16

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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.