Home / 860,816.20-1,187,899.14-478,839.64

Finding the Fourth Proportional to 860,816.20, 1,187,899.14 and 478,839.64

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Solution

The fourth proportional to 860,816.20, 1,187,899.14 and 478,839.64 is: 660,783.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,816.20 : 1,187,899.14 = 478,839.64 : x
  2. Step 2: Convert to fraction form
    860,816.20/1,187,899.14 = 478,839.64/x
  3. Step 3: Cross multiply
    860,816.20x = 1,187,899.14 × 478,839.64
  4. Step 4: Simplify right side
    860,816.20x = 568,813,196,553.91
  5. Step 5: Solve for x
    x = 568,813,196,553.91/860,816.20
  6. Step 6: Final answer
    x = 660,783.56

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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.