Home / 812,916.15-1,121,893.19-450,453.71

Finding the Fourth Proportional to 812,916.15, 1,121,893.19 and 450,453.71

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Solution

The fourth proportional to 812,916.15, 1,121,893.19 and 450,453.71 is: 621,664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,916.15 : 1,121,893.19 = 450,453.71 : x
  2. Step 2: Convert to fraction form
    812,916.15/1,121,893.19 = 450,453.71/x
  3. Step 3: Cross multiply
    812,916.15x = 1,121,893.19 × 450,453.71
  4. Step 4: Simplify right side
    812,916.15x = 505,360,941,797.50
  5. Step 5: Solve for x
    x = 505,360,941,797.50/812,916.15
  6. Step 6: Final answer
    x = 621,664.29

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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.