Home / 812,039.02-1,120,623.81-449,496.69

Finding the Fourth Proportional to 812,039.02, 1,120,623.81 and 449,496.69

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Solution

The fourth proportional to 812,039.02, 1,120,623.81 and 449,496.69 is: 620,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,039.02 : 1,120,623.81 = 449,496.69 : x
  2. Step 2: Convert to fraction form
    812,039.02/1,120,623.81 = 449,496.69/x
  3. Step 3: Cross multiply
    812,039.02x = 1,120,623.81 × 449,496.69
  4. Step 4: Simplify right side
    812,039.02x = 503,716,696,274.17
  5. Step 5: Solve for x
    x = 503,716,696,274.17/812,039.02
  6. Step 6: Final answer
    x = 620,310.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.