Home / 812,851.12-1,219,079.76-339,279.76

Finding the Fourth Proportional to 812,851.12, 1,219,079.76 and 339,279.76

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Solution

The fourth proportional to 812,851.12, 1,219,079.76 and 339,279.76 is: 508,837.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,851.12 : 1,219,079.76 = 339,279.76 : x
  2. Step 2: Convert to fraction form
    812,851.12/1,219,079.76 = 339,279.76/x
  3. Step 3: Cross multiply
    812,851.12x = 1,219,079.76 × 339,279.76
  4. Step 4: Simplify right side
    812,851.12x = 413,609,088,393.66
  5. Step 5: Solve for x
    x = 413,609,088,393.66/812,851.12
  6. Step 6: Final answer
    x = 508,837.45

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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.