Home / 843,046.40-1,261,945.20-487,002.80

Finding the Fourth Proportional to 843,046.40, 1,261,945.20 and 487,002.80

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Solution

The fourth proportional to 843,046.40, 1,261,945.20 and 487,002.80 is: 728,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,046.40 : 1,261,945.20 = 487,002.80 : x
  2. Step 2: Convert to fraction form
    843,046.40/1,261,945.20 = 487,002.80/x
  3. Step 3: Cross multiply
    843,046.40x = 1,261,945.20 × 487,002.80
  4. Step 4: Simplify right side
    843,046.40x = 614,570,845,846.56
  5. Step 5: Solve for x
    x = 614,570,845,846.56/843,046.40
  6. Step 6: Final answer
    x = 728,988.16

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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.