Home / 828,991.80-1,243,487.70-766,006.20

Finding the Fourth Proportional to 828,991.80, 1,243,487.70 and 766,006.20

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Solution

The fourth proportional to 828,991.80, 1,243,487.70 and 766,006.20 is: 1,149,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,991.80 : 1,243,487.70 = 766,006.20 : x
  2. Step 2: Convert to fraction form
    828,991.80/1,243,487.70 = 766,006.20/x
  3. Step 3: Cross multiply
    828,991.80x = 1,243,487.70 × 766,006.20
  4. Step 4: Simplify right side
    828,991.80x = 952,519,287,823.74
  5. Step 5: Solve for x
    x = 952,519,287,823.74/828,991.80
  6. Step 6: Final answer
    x = 1,149,009.30

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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.