Home / 830,390.80-1,245,395.04-324,963.76

Finding the Fourth Proportional to 830,390.80, 1,245,395.04 and 324,963.76

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Solution

The fourth proportional to 830,390.80, 1,245,395.04 and 324,963.76 is: 487,370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,390.80 : 1,245,395.04 = 324,963.76 : x
  2. Step 2: Convert to fraction form
    830,390.80/1,245,395.04 = 324,963.76/x
  3. Step 3: Cross multiply
    830,390.80x = 1,245,395.04 × 324,963.76
  4. Step 4: Simplify right side
    830,390.80x = 404,708,254,883.75
  5. Step 5: Solve for x
    x = 404,708,254,883.75/830,390.80
  6. Step 6: Final answer
    x = 487,370.83

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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.