Home / 866,142.88-1,298,090.73-385,687.03

Finding the Fourth Proportional to 866,142.88, 1,298,090.73 and 385,687.03

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Solution

The fourth proportional to 866,142.88, 1,298,090.73 and 385,687.03 is: 578,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,142.88 : 1,298,090.73 = 385,687.03 : x
  2. Step 2: Convert to fraction form
    866,142.88/1,298,090.73 = 385,687.03/x
  3. Step 3: Cross multiply
    866,142.88x = 1,298,090.73 × 385,687.03
  4. Step 4: Simplify right side
    866,142.88x = 500,656,756,789.76
  5. Step 5: Solve for x
    x = 500,656,756,789.76/866,142.88
  6. Step 6: Final answer
    x = 578,030.21

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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.