Home / 726,341.60-1,089,512.40-442,906.40

Finding the Fourth Proportional to 726,341.60, 1,089,512.40 and 442,906.40

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Solution

The fourth proportional to 726,341.60, 1,089,512.40 and 442,906.40 is: 664,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,341.60 : 1,089,512.40 = 442,906.40 : x
  2. Step 2: Convert to fraction form
    726,341.60/1,089,512.40 = 442,906.40/x
  3. Step 3: Cross multiply
    726,341.60x = 1,089,512.40 × 442,906.40
  4. Step 4: Simplify right side
    726,341.60x = 482,552,014,839.36
  5. Step 5: Solve for x
    x = 482,552,014,839.36/726,341.60
  6. Step 6: Final answer
    x = 664,359.60

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Double scale
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Similar ratio
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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.