Home / 811,538.38-1,217,418.14-338,113.02

Finding the Fourth Proportional to 811,538.38, 1,217,418.14 and 338,113.02

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Solution

The fourth proportional to 811,538.38, 1,217,418.14 and 338,113.02 is: 507,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,538.38 : 1,217,418.14 = 338,113.02 : x
  2. Step 2: Convert to fraction form
    811,538.38/1,217,418.14 = 338,113.02/x
  3. Step 3: Cross multiply
    811,538.38x = 1,217,418.14 × 338,113.02
  4. Step 4: Simplify right side
    811,538.38x = 411,624,923,918.18
  5. Step 5: Solve for x
    x = 411,624,923,918.18/811,538.38
  6. Step 6: Final answer
    x = 507,215.60

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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.