Home / 830,400.30-1,245,600.45-269,434.80

Finding the Fourth Proportional to 830,400.30, 1,245,600.45 and 269,434.80

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Solution

The fourth proportional to 830,400.30, 1,245,600.45 and 269,434.80 is: 404,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,400.30 : 1,245,600.45 = 269,434.80 : x
  2. Step 2: Convert to fraction form
    830,400.30/1,245,600.45 = 269,434.80/x
  3. Step 3: Cross multiply
    830,400.30x = 1,245,600.45 × 269,434.80
  4. Step 4: Simplify right side
    830,400.30x = 335,608,108,125.66
  5. Step 5: Solve for x
    x = 335,608,108,125.66/830,400.30
  6. Step 6: Final answer
    x = 404,152.20

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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.