Home / 821,800.62-1,134,434.14-499,613.60

Finding the Fourth Proportional to 821,800.62, 1,134,434.14 and 499,613.60

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Solution

The fourth proportional to 821,800.62, 1,134,434.14 and 499,613.60 is: 689,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,800.62 : 1,134,434.14 = 499,613.60 : x
  2. Step 2: Convert to fraction form
    821,800.62/1,134,434.14 = 499,613.60/x
  3. Step 3: Cross multiply
    821,800.62x = 1,134,434.14 × 499,613.60
  4. Step 4: Simplify right side
    821,800.62x = 566,778,724,648.30
  5. Step 5: Solve for x
    x = 566,778,724,648.30/821,800.62
  6. Step 6: Final answer
    x = 689,679.12

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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.