Home / 812,869.64-1,121,745.44-450,292.40

Finding the Fourth Proportional to 812,869.64, 1,121,745.44 and 450,292.40

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Solution

The fourth proportional to 812,869.64, 1,121,745.44 and 450,292.40 is: 621,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,869.64 : 1,121,745.44 = 450,292.40 : x
  2. Step 2: Convert to fraction form
    812,869.64/1,121,745.44 = 450,292.40/x
  3. Step 3: Cross multiply
    812,869.64x = 1,121,745.44 × 450,292.40
  4. Step 4: Simplify right side
    812,869.64x = 505,113,446,366.66
  5. Step 5: Solve for x
    x = 505,113,446,366.66/812,869.64
  6. Step 6: Final answer
    x = 621,395.39

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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.