Home / 811,442.60-1,216,904.70-338,013.80

Finding the Fourth Proportional to 811,442.60, 1,216,904.70 and 338,013.80

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Solution

The fourth proportional to 811,442.60, 1,216,904.70 and 338,013.80 is: 506,912.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,442.60 : 1,216,904.70 = 338,013.80 : x
  2. Step 2: Convert to fraction form
    811,442.60/1,216,904.70 = 338,013.80/x
  3. Step 3: Cross multiply
    811,442.60x = 1,216,904.70 × 338,013.80
  4. Step 4: Simplify right side
    811,442.60x = 411,330,581,884.86
  5. Step 5: Solve for x
    x = 411,330,581,884.86/811,442.60
  6. Step 6: Final answer
    x = 506,912.73

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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.