Home / 287,600,527.80-431,400,791.70-199,593,898.20

Finding the Fourth Proportional to 287,600,527.80, 431,400,791.70 and 199,593,898.20

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Solution

The fourth proportional to 287,600,527.80, 431,400,791.70 and 199,593,898.20 is: 299,390,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,600,527.80 : 431,400,791.70 = 199,593,898.20 : x
  2. Step 2: Convert to fraction form
    287,600,527.80/431,400,791.70 = 199,593,898.20/x
  3. Step 3: Cross multiply
    287,600,527.80x = 431,400,791.70 × 199,593,898.20
  4. Step 4: Simplify right side
    287,600,527.80x = 86,104,965,701,969,200
  5. Step 5: Solve for x
    x = 86,104,965,701,969,200/287,600,527.80
  6. Step 6: Final answer
    x = 299,390,847.30

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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.