Home / 726,478.76-1,089,707.19-326,837.31

Finding the Fourth Proportional to 726,478.76, 1,089,707.19 and 326,837.31

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Solution

The fourth proportional to 726,478.76, 1,089,707.19 and 326,837.31 is: 490,251.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,478.76 : 1,089,707.19 = 326,837.31 : x
  2. Step 2: Convert to fraction form
    726,478.76/1,089,707.19 = 326,837.31/x
  3. Step 3: Cross multiply
    726,478.76x = 1,089,707.19 × 326,837.31
  4. Step 4: Simplify right side
    726,478.76x = 356,156,966,667.26
  5. Step 5: Solve for x
    x = 356,156,966,667.26/726,478.76
  6. Step 6: Final answer
    x = 490,251.04

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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.