Home / 813,717.08-1,220,436.28-214,684.40

Finding the Fourth Proportional to 813,717.08, 1,220,436.28 and 214,684.40

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Solution

The fourth proportional to 813,717.08, 1,220,436.28 and 214,684.40 is: 321,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,717.08 : 1,220,436.28 = 214,684.40 : x
  2. Step 2: Convert to fraction form
    813,717.08/1,220,436.28 = 214,684.40/x
  3. Step 3: Cross multiply
    813,717.08x = 1,220,436.28 × 214,684.40
  4. Step 4: Simplify right side
    813,717.08x = 262,008,630,510.03
  5. Step 5: Solve for x
    x = 262,008,630,510.03/813,717.08
  6. Step 6: Final answer
    x = 321,989.84

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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.