Home / 783,516.20-1,081,236.90-456,890.12

Finding the Fourth Proportional to 783,516.20, 1,081,236.90 and 456,890.12

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Solution

The fourth proportional to 783,516.20, 1,081,236.90 and 456,890.12 is: 630,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,516.20 : 1,081,236.90 = 456,890.12 : x
  2. Step 2: Convert to fraction form
    783,516.20/1,081,236.90 = 456,890.12/x
  3. Step 3: Cross multiply
    783,516.20x = 1,081,236.90 × 456,890.12
  4. Step 4: Simplify right side
    783,516.20x = 494,006,456,989.43
  5. Step 5: Solve for x
    x = 494,006,456,989.43/783,516.20
  6. Step 6: Final answer
    x = 630,499.35

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Half scale
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Double scale
Find fourth proportional to 783,517.20, 1,081,238.28 and 456,891.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.