Home / 813,718.83-1,220,439.74-214,685.76

Finding the Fourth Proportional to 813,718.83, 1,220,439.74 and 214,685.76

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Solution

The fourth proportional to 813,718.83, 1,220,439.74 and 214,685.76 is: 321,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,718.83 : 1,220,439.74 = 214,685.76 : x
  2. Step 2: Convert to fraction form
    813,718.83/1,220,439.74 = 214,685.76/x
  3. Step 3: Cross multiply
    813,718.83x = 1,220,439.74 × 214,685.76
  4. Step 4: Simplify right side
    813,718.83x = 262,011,032,042.67
  5. Step 5: Solve for x
    x = 262,011,032,042.67/813,718.83
  6. Step 6: Final answer
    x = 321,992.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.