Home / 828,987.30-1,243,772.55-407,981.70

Finding the Fourth Proportional to 828,987.30, 1,243,772.55 and 407,981.70

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Solution

The fourth proportional to 828,987.30, 1,243,772.55 and 407,981.70 is: 612,116.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,987.30 : 1,243,772.55 = 407,981.70 : x
  2. Step 2: Convert to fraction form
    828,987.30/1,243,772.55 = 407,981.70/x
  3. Step 3: Cross multiply
    828,987.30x = 1,243,772.55 × 407,981.70
  4. Step 4: Simplify right side
    828,987.30x = 507,436,439,362.34
  5. Step 5: Solve for x
    x = 507,436,439,362.34/828,987.30
  6. Step 6: Final answer
    x = 612,116.06

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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.