Home / 812,874.95-1,220,068.97-413,814.47

Finding the Fourth Proportional to 812,874.95, 1,220,068.97 and 413,814.47

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Solution

The fourth proportional to 812,874.95, 1,220,068.97 and 413,814.47 is: 621,106.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,874.95 : 1,220,068.97 = 413,814.47 : x
  2. Step 2: Convert to fraction form
    812,874.95/1,220,068.97 = 413,814.47/x
  3. Step 3: Cross multiply
    812,874.95x = 1,220,068.97 × 413,814.47
  4. Step 4: Simplify right side
    812,874.95x = 504,882,192,114.92
  5. Step 5: Solve for x
    x = 504,882,192,114.92/812,874.95
  6. Step 6: Final answer
    x = 621,106.84

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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.