Home / 619,047.18-853,922.16-389,240.16

Finding the Fourth Proportional to 619,047.18, 853,922.16 and 389,240.16

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Solution

The fourth proportional to 619,047.18, 853,922.16 and 389,240.16 is: 536,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,047.18 : 853,922.16 = 389,240.16 : x
  2. Step 2: Convert to fraction form
    619,047.18/853,922.16 = 389,240.16/x
  3. Step 3: Cross multiply
    619,047.18x = 853,922.16 × 389,240.16
  4. Step 4: Simplify right side
    619,047.18x = 332,380,798,185.95
  5. Step 5: Solve for x
    x = 332,380,798,185.95/619,047.18
  6. Step 6: Final answer
    x = 536,923.21

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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.