Home / 812,853.12-1,219,082.76-339,281.76

Finding the Fourth Proportional to 812,853.12, 1,219,082.76 and 339,281.76

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Solution

The fourth proportional to 812,853.12, 1,219,082.76 and 339,281.76 is: 508,840.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,853.12 : 1,219,082.76 = 339,281.76 : x
  2. Step 2: Convert to fraction form
    812,853.12/1,219,082.76 = 339,281.76/x
  3. Step 3: Cross multiply
    812,853.12x = 1,219,082.76 × 339,281.76
  4. Step 4: Simplify right side
    812,853.12x = 413,612,544,398.46
  5. Step 5: Solve for x
    x = 413,612,544,398.46/812,853.12
  6. Step 6: Final answer
    x = 508,840.45

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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.