Home / 813,105.20-1,122,054.90-468,955.54

Finding the Fourth Proportional to 813,105.20, 1,122,054.90 and 468,955.54

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Solution

The fourth proportional to 813,105.20, 1,122,054.90 and 468,955.54 is: 647,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,105.20 : 1,122,054.90 = 468,955.54 : x
  2. Step 2: Convert to fraction form
    813,105.20/1,122,054.90 = 468,955.54/x
  3. Step 3: Cross multiply
    813,105.20x = 1,122,054.90 × 468,955.54
  4. Step 4: Simplify right side
    813,105.20x = 526,193,855,928.87
  5. Step 5: Solve for x
    x = 526,193,855,928.87/813,105.20
  6. Step 6: Final answer
    x = 647,141.18

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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.