Home / 813,492.89-1,219,856.86-300,803.79

Finding the Fourth Proportional to 813,492.89, 1,219,856.86 and 300,803.79

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Solution

The fourth proportional to 813,492.89, 1,219,856.86 and 300,803.79 is: 451,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,492.89 : 1,219,856.86 = 300,803.79 : x
  2. Step 2: Convert to fraction form
    813,492.89/1,219,856.86 = 300,803.79/x
  3. Step 3: Cross multiply
    813,492.89x = 1,219,856.86 × 300,803.79
  4. Step 4: Simplify right side
    813,492.89x = 366,937,571,695.97
  5. Step 5: Solve for x
    x = 366,937,571,695.97/813,492.89
  6. Step 6: Final answer
    x = 451,064.26

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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.