Home / 619,140.45-928,710.87-408,729.18

Finding the Fourth Proportional to 619,140.45, 928,710.87 and 408,729.18

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Solution

The fourth proportional to 619,140.45, 928,710.87 and 408,729.18 is: 613,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,140.45 : 928,710.87 = 408,729.18 : x
  2. Step 2: Convert to fraction form
    619,140.45/928,710.87 = 408,729.18/x
  3. Step 3: Cross multiply
    619,140.45x = 928,710.87 × 408,729.18
  4. Step 4: Simplify right side
    619,140.45x = 379,591,232,352.19
  5. Step 5: Solve for x
    x = 379,591,232,352.19/619,140.45
  6. Step 6: Final answer
    x = 613,093.90

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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.