Home / 505,619.61-697,758.67-279,265.11

Finding the Fourth Proportional to 505,619.61, 697,758.67 and 279,265.11

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Solution

The fourth proportional to 505,619.61, 697,758.67 and 279,265.11 is: 385,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,619.61 : 697,758.67 = 279,265.11 : x
  2. Step 2: Convert to fraction form
    505,619.61/697,758.67 = 279,265.11/x
  3. Step 3: Cross multiply
    505,619.61x = 697,758.67 × 279,265.11
  4. Step 4: Simplify right side
    505,619.61x = 194,859,651,731.00
  5. Step 5: Solve for x
    x = 194,859,651,731.00/505,619.61
  6. Step 6: Final answer
    x = 385,387.84

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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.