Home / 812,501.60-1,218,865.80-339,078.44

Finding the Fourth Proportional to 812,501.60, 1,218,865.80 and 339,078.44

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Solution

The fourth proportional to 812,501.60, 1,218,865.80 and 339,078.44 is: 508,664.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,501.60 : 1,218,865.80 = 339,078.44 : x
  2. Step 2: Convert to fraction form
    812,501.60/1,218,865.80 = 339,078.44/x
  3. Step 3: Cross multiply
    812,501.60x = 1,218,865.80 × 339,078.44
  4. Step 4: Simplify right side
    812,501.60x = 413,291,114,033.35
  5. Step 5: Solve for x
    x = 413,291,114,033.35/812,501.60
  6. Step 6: Final answer
    x = 508,664.98

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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.