Home / 828,982.80-1,243,765.80-407,977.20

Finding the Fourth Proportional to 828,982.80, 1,243,765.80 and 407,977.20

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Solution

The fourth proportional to 828,982.80, 1,243,765.80 and 407,977.20 is: 612,109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,982.80 : 1,243,765.80 = 407,977.20 : x
  2. Step 2: Convert to fraction form
    828,982.80/1,243,765.80 = 407,977.20/x
  3. Step 3: Cross multiply
    828,982.80x = 1,243,765.80 × 407,977.20
  4. Step 4: Simplify right side
    828,982.80x = 507,428,088,539.76
  5. Step 5: Solve for x
    x = 507,428,088,539.76/828,982.80
  6. Step 6: Final answer
    x = 612,109.31

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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.