Home / 1,390,687.30-2,086,090.17-492,136.48

Finding the Fourth Proportional to 1,390,687.30, 2,086,090.17 and 492,136.48

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Solution

The fourth proportional to 1,390,687.30, 2,086,090.17 and 492,136.48 is: 738,225.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,687.30 : 2,086,090.17 = 492,136.48 : x
  2. Step 2: Convert to fraction form
    1,390,687.30/2,086,090.17 = 492,136.48/x
  3. Step 3: Cross multiply
    1,390,687.30x = 2,086,090.17 × 492,136.48
  4. Step 4: Simplify right side
    1,390,687.30x = 1,026,641,073,226.40
  5. Step 5: Solve for x
    x = 1,026,641,073,226.40/1,390,687.30
  6. Step 6: Final answer
    x = 738,225.68

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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.