Home / 830,121.76-1,245,058.70-231,020.45

Finding the Fourth Proportional to 830,121.76, 1,245,058.70 and 231,020.45

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Solution

The fourth proportional to 830,121.76, 1,245,058.70 and 231,020.45 is: 346,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,121.76 : 1,245,058.70 = 231,020.45 : x
  2. Step 2: Convert to fraction form
    830,121.76/1,245,058.70 = 231,020.45/x
  3. Step 3: Cross multiply
    830,121.76x = 1,245,058.70 × 231,020.45
  4. Step 4: Simplify right side
    830,121.76x = 287,634,015,502.67
  5. Step 5: Solve for x
    x = 287,634,015,502.67/830,121.76
  6. Step 6: Final answer
    x = 346,496.18

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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.