Home / 505,555.20-697,670.94-287,753.24

Finding the Fourth Proportional to 505,555.20, 697,670.94 and 287,753.24

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Solution

The fourth proportional to 505,555.20, 697,670.94 and 287,753.24 is: 397,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,555.20 : 697,670.94 = 287,753.24 : x
  2. Step 2: Convert to fraction form
    505,555.20/697,670.94 = 287,753.24/x
  3. Step 3: Cross multiply
    505,555.20x = 697,670.94 × 287,753.24
  4. Step 4: Simplify right side
    505,555.20x = 200,757,069,950.49
  5. Step 5: Solve for x
    x = 200,757,069,950.49/505,555.20
  6. Step 6: Final answer
    x = 397,102.18

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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.