Home / 828,961.80-1,243,734.30-407,956.20

Finding the Fourth Proportional to 828,961.80, 1,243,734.30 and 407,956.20

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Solution

The fourth proportional to 828,961.80, 1,243,734.30 and 407,956.20 is: 612,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,961.80 : 1,243,734.30 = 407,956.20 : x
  2. Step 2: Convert to fraction form
    828,961.80/1,243,734.30 = 407,956.20/x
  3. Step 3: Cross multiply
    828,961.80x = 1,243,734.30 × 407,956.20
  4. Step 4: Simplify right side
    828,961.80x = 507,389,118,837.66
  5. Step 5: Solve for x
    x = 507,389,118,837.66/828,961.80
  6. Step 6: Final answer
    x = 612,077.80

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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.