Home / 619,441.85-928,965.94-421,037.21

Finding the Fourth Proportional to 619,441.85, 928,965.94 and 421,037.21

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Solution

The fourth proportional to 619,441.85, 928,965.94 and 421,037.21 is: 631,422.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,441.85 : 928,965.94 = 421,037.21 : x
  2. Step 2: Convert to fraction form
    619,441.85/928,965.94 = 421,037.21/x
  3. Step 3: Cross multiply
    619,441.85x = 928,965.94 × 421,037.21
  4. Step 4: Simplify right side
    619,441.85x = 391,129,221,865.21
  5. Step 5: Solve for x
    x = 391,129,221,865.21/619,441.85
  6. Step 6: Final answer
    x = 631,422.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.