Home / 905,275.32-1,358,207.82-431,899.44

Finding the Fourth Proportional to 905,275.32, 1,358,207.82 and 431,899.44

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Solution

The fourth proportional to 905,275.32, 1,358,207.82 and 431,899.44 is: 647,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,275.32 : 1,358,207.82 = 431,899.44 : x
  2. Step 2: Convert to fraction form
    905,275.32/1,358,207.82 = 431,899.44/x
  3. Step 3: Cross multiply
    905,275.32x = 1,358,207.82 × 431,899.44
  4. Step 4: Simplify right side
    905,275.32x = 586,609,196,861.62
  5. Step 5: Solve for x
    x = 586,609,196,861.62/905,275.32
  6. Step 6: Final answer
    x = 647,989.83

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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.