Home / 636,692.12-879,895.27-521,789.57

Finding the Fourth Proportional to 636,692.12, 879,895.27 and 521,789.57

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Solution

The fourth proportional to 636,692.12, 879,895.27 and 521,789.57 is: 721,102.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,692.12 : 879,895.27 = 521,789.57 : x
  2. Step 2: Convert to fraction form
    636,692.12/879,895.27 = 521,789.57/x
  3. Step 3: Cross multiply
    636,692.12x = 879,895.27 × 521,789.57
  4. Step 4: Simplify right side
    636,692.12x = 459,120,174,578.33
  5. Step 5: Solve for x
    x = 459,120,174,578.33/636,692.12
  6. Step 6: Final answer
    x = 721,102.34

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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.