Home / 430,927.47-645,517.59-199,791.80

Finding the Fourth Proportional to 430,927.47, 645,517.59 and 199,791.80

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Solution

The fourth proportional to 430,927.47, 645,517.59 and 199,791.80 is: 299,282.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,927.47 : 645,517.59 = 199,791.80 : x
  2. Step 2: Convert to fraction form
    430,927.47/645,517.59 = 199,791.80/x
  3. Step 3: Cross multiply
    430,927.47x = 645,517.59 × 199,791.80
  4. Step 4: Simplify right side
    430,927.47x = 128,969,118,010.17
  5. Step 5: Solve for x
    x = 128,969,118,010.17/430,927.47
  6. Step 6: Final answer
    x = 299,282.66

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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.