Home / 809,115.10-1,213,672.65-651,651.10

Finding the Fourth Proportional to 809,115.10, 1,213,672.65 and 651,651.10

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Solution

The fourth proportional to 809,115.10, 1,213,672.65 and 651,651.10 is: 977,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,115.10 : 1,213,672.65 = 651,651.10 : x
  2. Step 2: Convert to fraction form
    809,115.10/1,213,672.65 = 651,651.10/x
  3. Step 3: Cross multiply
    809,115.10x = 1,213,672.65 × 651,651.10
  4. Step 4: Simplify right side
    809,115.10x = 790,891,117,412.42
  5. Step 5: Solve for x
    x = 790,891,117,412.42/809,115.10
  6. Step 6: Final answer
    x = 977,476.65

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Double scale
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Similar ratio
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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.