Home / 811,287.88-1,214,440.66-510,359.45

Finding the Fourth Proportional to 811,287.88, 1,214,440.66 and 510,359.45

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Solution

The fourth proportional to 811,287.88, 1,214,440.66 and 510,359.45 is: 763,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,287.88 : 1,214,440.66 = 510,359.45 : x
  2. Step 2: Convert to fraction form
    811,287.88/1,214,440.66 = 510,359.45/x
  3. Step 3: Cross multiply
    811,287.88x = 1,214,440.66 × 510,359.45
  4. Step 4: Simplify right side
    811,287.88x = 619,801,266,019.34
  5. Step 5: Solve for x
    x = 619,801,266,019.34/811,287.88
  6. Step 6: Final answer
    x = 763,972.06

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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.