Home / 830,190.76-1,245,790.14-331,513

Finding the Fourth Proportional to 830,190.76, 1,245,790.14 and 331,513

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Solution

The fourth proportional to 830,190.76, 1,245,790.14 and 331,513 is: 497,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,190.76 : 1,245,790.14 = 331,513 : x
  2. Step 2: Convert to fraction form
    830,190.76/1,245,790.14 = 331,513/x
  3. Step 3: Cross multiply
    830,190.76x = 1,245,790.14 × 331,513
  4. Step 4: Simplify right side
    830,190.76x = 412,995,626,681.82
  5. Step 5: Solve for x
    x = 412,995,626,681.82/830,190.76
  6. Step 6: Final answer
    x = 497,470.76

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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.