Home / 726,719.40-1,089,641.70-372,425.40

Finding the Fourth Proportional to 726,719.40, 1,089,641.70 and 372,425.40

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Solution

The fourth proportional to 726,719.40, 1,089,641.70 and 372,425.40 is: 558,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,719.40 : 1,089,641.70 = 372,425.40 : x
  2. Step 2: Convert to fraction form
    726,719.40/1,089,641.70 = 372,425.40/x
  3. Step 3: Cross multiply
    726,719.40x = 1,089,641.70 × 372,425.40
  4. Step 4: Simplify right side
    726,719.40x = 405,810,245,979.18
  5. Step 5: Solve for x
    x = 405,810,245,979.18/726,719.40
  6. Step 6: Final answer
    x = 558,413.94

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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.