Home / 790,997.50-1,186,914.60-431,427.94

Finding the Fourth Proportional to 790,997.50, 1,186,914.60 and 431,427.94

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Solution

The fourth proportional to 790,997.50, 1,186,914.60 and 431,427.94 is: 647,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,997.50 : 1,186,914.60 = 431,427.94 : x
  2. Step 2: Convert to fraction form
    790,997.50/1,186,914.60 = 431,427.94/x
  3. Step 3: Cross multiply
    790,997.50x = 1,186,914.60 × 431,427.94
  4. Step 4: Simplify right side
    790,997.50x = 512,068,120,833.92
  5. Step 5: Solve for x
    x = 512,068,120,833.92/790,997.50
  6. Step 6: Final answer
    x = 647,370.09

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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.