Home / 726,716.40-1,089,637.20-372,422.40

Finding the Fourth Proportional to 726,716.40, 1,089,637.20 and 372,422.40

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Solution

The fourth proportional to 726,716.40, 1,089,637.20 and 372,422.40 is: 558,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,716.40 : 1,089,637.20 = 372,422.40 : x
  2. Step 2: Convert to fraction form
    726,716.40/1,089,637.20 = 372,422.40/x
  3. Step 3: Cross multiply
    726,716.40x = 1,089,637.20 × 372,422.40
  4. Step 4: Simplify right side
    726,716.40x = 405,805,301,153.28
  5. Step 5: Solve for x
    x = 405,805,301,153.28/726,716.40
  6. Step 6: Final answer
    x = 558,409.44

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1.5x scale

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.