Home / 813,172.95-1,122,146.46-450,612.09

Finding the Fourth Proportional to 813,172.95, 1,122,146.46 and 450,612.09

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Solution

The fourth proportional to 813,172.95, 1,122,146.46 and 450,612.09 is: 621,826.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,172.95 : 1,122,146.46 = 450,612.09 : x
  2. Step 2: Convert to fraction form
    813,172.95/1,122,146.46 = 450,612.09/x
  3. Step 3: Cross multiply
    813,172.95x = 1,122,146.46 × 450,612.09
  4. Step 4: Simplify right side
    813,172.95x = 505,652,761,626.70
  5. Step 5: Solve for x
    x = 505,652,761,626.70/813,172.95
  6. Step 6: Final answer
    x = 621,826.83

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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.