Home / 519,623.80-778,706.70-413,189.80

Finding the Fourth Proportional to 519,623.80, 778,706.70 and 413,189.80

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Solution

The fourth proportional to 519,623.80, 778,706.70 and 413,189.80 is: 619,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,623.80 : 778,706.70 = 413,189.80 : x
  2. Step 2: Convert to fraction form
    519,623.80/778,706.70 = 413,189.80/x
  3. Step 3: Cross multiply
    519,623.80x = 778,706.70 × 413,189.80
  4. Step 4: Simplify right side
    519,623.80x = 321,753,665,631.66
  5. Step 5: Solve for x
    x = 321,753,665,631.66/519,623.80
  6. Step 6: Final answer
    x = 619,205.02

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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.