Home / 812,711.10-1,219,212.45-339,444.30

Finding the Fourth Proportional to 812,711.10, 1,219,212.45 and 339,444.30

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Solution

The fourth proportional to 812,711.10, 1,219,212.45 and 339,444.30 is: 509,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,711.10 : 1,219,212.45 = 339,444.30 : x
  2. Step 2: Convert to fraction form
    812,711.10/1,219,212.45 = 339,444.30/x
  3. Step 3: Cross multiply
    812,711.10x = 1,219,212.45 × 339,444.30
  4. Step 4: Simplify right side
    812,711.10x = 413,854,716,641.54
  5. Step 5: Solve for x
    x = 413,854,716,641.54/812,711.10
  6. Step 6: Final answer
    x = 509,227.35

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1.5x scale

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.