Home / 812,701.84-1,219,247.40-339,123.76

Finding the Fourth Proportional to 812,701.84, 1,219,247.40 and 339,123.76

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Solution

The fourth proportional to 812,701.84, 1,219,247.40 and 339,123.76 is: 508,766.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,701.84 : 1,219,247.40 = 339,123.76 : x
  2. Step 2: Convert to fraction form
    812,701.84/1,219,247.40 = 339,123.76/x
  3. Step 3: Cross multiply
    812,701.84x = 1,219,247.40 × 339,123.76
  4. Step 4: Simplify right side
    812,701.84x = 413,475,762,658.22
  5. Step 5: Solve for x
    x = 413,475,762,658.22/812,701.84
  6. Step 6: Final answer
    x = 508,766.86

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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.