Home / 811,648.56-1,216,681.32-338,469.36

Finding the Fourth Proportional to 811,648.56, 1,216,681.32 and 338,469.36

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Solution

The fourth proportional to 811,648.56, 1,216,681.32 and 338,469.36 is: 507,373.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,648.56 : 1,216,681.32 = 338,469.36 : x
  2. Step 2: Convert to fraction form
    811,648.56/1,216,681.32 = 338,469.36/x
  3. Step 3: Cross multiply
    811,648.56x = 1,216,681.32 × 338,469.36
  4. Step 4: Simplify right side
    811,648.56x = 411,809,347,704.36
  5. Step 5: Solve for x
    x = 411,809,347,704.36/811,648.56
  6. Step 6: Final answer
    x = 507,373.96

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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.