Home / 817,040.76-1,225,288.98-343,637.88

Finding the Fourth Proportional to 817,040.76, 1,225,288.98 and 343,637.88

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Solution

The fourth proportional to 817,040.76, 1,225,288.98 and 343,637.88 is: 515,342.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,040.76 : 1,225,288.98 = 343,637.88 : x
  2. Step 2: Convert to fraction form
    817,040.76/1,225,288.98 = 343,637.88/x
  3. Step 3: Cross multiply
    817,040.76x = 1,225,288.98 × 343,637.88
  4. Step 4: Simplify right side
    817,040.76x = 421,055,707,474.56
  5. Step 5: Solve for x
    x = 421,055,707,474.56/817,040.76
  6. Step 6: Final answer
    x = 515,342.35

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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.