Home / 505,891.20-698,169.67-288,109.10

Finding the Fourth Proportional to 505,891.20, 698,169.67 and 288,109.10

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Solution

The fourth proportional to 505,891.20, 698,169.67 and 288,109.10 is: 397,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,891.20 : 698,169.67 = 288,109.10 : x
  2. Step 2: Convert to fraction form
    505,891.20/698,169.67 = 288,109.10/x
  3. Step 3: Cross multiply
    505,891.20x = 698,169.67 × 288,109.10
  4. Step 4: Simplify right side
    505,891.20x = 201,149,035,271.00
  5. Step 5: Solve for x
    x = 201,149,035,271.00/505,891.20
  6. Step 6: Final answer
    x = 397,613.23

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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.