Home / 831,521.08-1,147,499.20-449,547.76

Finding the Fourth Proportional to 831,521.08, 1,147,499.20 and 449,547.76

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Solution

The fourth proportional to 831,521.08, 1,147,499.20 and 449,547.76 is: 620,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,521.08 : 1,147,499.20 = 449,547.76 : x
  2. Step 2: Convert to fraction form
    831,521.08/1,147,499.20 = 449,547.76/x
  3. Step 3: Cross multiply
    831,521.08x = 1,147,499.20 × 449,547.76
  4. Step 4: Simplify right side
    831,521.08x = 515,855,694,961.79
  5. Step 5: Solve for x
    x = 515,855,694,961.79/831,521.08
  6. Step 6: Final answer
    x = 620,375.97

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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.