Home / 772,136.40-1,159,241.40-492,891.60

Finding the Fourth Proportional to 772,136.40, 1,159,241.40 and 492,891.60

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Solution

The fourth proportional to 772,136.40, 1,159,241.40 and 492,891.60 is: 739,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,136.40 : 1,159,241.40 = 492,891.60 : x
  2. Step 2: Convert to fraction form
    772,136.40/1,159,241.40 = 492,891.60/x
  3. Step 3: Cross multiply
    772,136.40x = 1,159,241.40 × 492,891.60
  4. Step 4: Simplify right side
    772,136.40x = 571,380,348,432.24
  5. Step 5: Solve for x
    x = 571,380,348,432.24/772,136.40
  6. Step 6: Final answer
    x = 739,999.24

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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.