Home / 811,431.83-1,217,258.46-338,006.47

Finding the Fourth Proportional to 811,431.83, 1,217,258.46 and 338,006.47

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Solution

The fourth proportional to 811,431.83, 1,217,258.46 and 338,006.47 is: 507,055.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,431.83 : 1,217,258.46 = 338,006.47 : x
  2. Step 2: Convert to fraction form
    811,431.83/1,217,258.46 = 338,006.47/x
  3. Step 3: Cross multiply
    811,431.83x = 1,217,258.46 × 338,006.47
  4. Step 4: Simplify right side
    811,431.83x = 411,441,236,917.86
  5. Step 5: Solve for x
    x = 411,441,236,917.86/811,431.83
  6. Step 6: Final answer
    x = 507,055.83

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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.