Home / 864,090.80-1,296,136.20-811,602.80

Finding the Fourth Proportional to 864,090.80, 1,296,136.20 and 811,602.80

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Solution

The fourth proportional to 864,090.80, 1,296,136.20 and 811,602.80 is: 1,217,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,090.80 : 1,296,136.20 = 811,602.80 : x
  2. Step 2: Convert to fraction form
    864,090.80/1,296,136.20 = 811,602.80/x
  3. Step 3: Cross multiply
    864,090.80x = 1,296,136.20 × 811,602.80
  4. Step 4: Simplify right side
    864,090.80x = 1,051,947,769,101.36
  5. Step 5: Solve for x
    x = 1,051,947,769,101.36/864,090.80
  6. Step 6: Final answer
    x = 1,217,404.20

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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.