Home / 811,989.60-1,217,984.40-251,080.80

Finding the Fourth Proportional to 811,989.60, 1,217,984.40 and 251,080.80

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Solution

The fourth proportional to 811,989.60, 1,217,984.40 and 251,080.80 is: 376,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,989.60 : 1,217,984.40 = 251,080.80 : x
  2. Step 2: Convert to fraction form
    811,989.60/1,217,984.40 = 251,080.80/x
  3. Step 3: Cross multiply
    811,989.60x = 1,217,984.40 × 251,080.80
  4. Step 4: Simplify right side
    811,989.60x = 305,812,497,539.52
  5. Step 5: Solve for x
    x = 305,812,497,539.52/811,989.60
  6. Step 6: Final answer
    x = 376,621.20

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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.