Home / 828,981.80-1,243,764.30-407,976.20

Finding the Fourth Proportional to 828,981.80, 1,243,764.30 and 407,976.20

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Solution

The fourth proportional to 828,981.80, 1,243,764.30 and 407,976.20 is: 612,107.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,981.80 : 1,243,764.30 = 407,976.20 : x
  2. Step 2: Convert to fraction form
    828,981.80/1,243,764.30 = 407,976.20/x
  3. Step 3: Cross multiply
    828,981.80x = 1,243,764.30 × 407,976.20
  4. Step 4: Simplify right side
    828,981.80x = 507,426,232,809.66
  5. Step 5: Solve for x
    x = 507,426,232,809.66/828,981.80
  6. Step 6: Final answer
    x = 612,107.81

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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.