Home / 818,211.85-1,225,054.22-417,990.85

Finding the Fourth Proportional to 818,211.85, 1,225,054.22 and 417,990.85

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Solution

The fourth proportional to 818,211.85, 1,225,054.22 and 417,990.85 is: 625,829.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,211.85 : 1,225,054.22 = 417,990.85 : x
  2. Step 2: Convert to fraction form
    818,211.85/1,225,054.22 = 417,990.85/x
  3. Step 3: Cross multiply
    818,211.85x = 1,225,054.22 × 417,990.85
  4. Step 4: Simplify right side
    818,211.85x = 512,061,454,713.89
  5. Step 5: Solve for x
    x = 512,061,454,713.89/818,211.85
  6. Step 6: Final answer
    x = 625,829.92

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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.