Home / 786,516.38-1,085,484.76-447,035.66

Finding the Fourth Proportional to 786,516.38, 1,085,484.76 and 447,035.66

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Solution

The fourth proportional to 786,516.38, 1,085,484.76 and 447,035.66 is: 616,961.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,516.38 : 1,085,484.76 = 447,035.66 : x
  2. Step 2: Convert to fraction form
    786,516.38/1,085,484.76 = 447,035.66/x
  3. Step 3: Cross multiply
    786,516.38x = 1,085,484.76 × 447,035.66
  4. Step 4: Simplify right side
    786,516.38x = 485,250,396,106.54
  5. Step 5: Solve for x
    x = 485,250,396,106.54/786,516.38
  6. Step 6: Final answer
    x = 616,961.59

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Double scale
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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.