Home / 727,117.20-1,089,768.60-372,272.40

Finding the Fourth Proportional to 727,117.20, 1,089,768.60 and 372,272.40

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Solution

The fourth proportional to 727,117.20, 1,089,768.60 and 372,272.40 is: 557,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,117.20 : 1,089,768.60 = 372,272.40 : x
  2. Step 2: Convert to fraction form
    727,117.20/1,089,768.60 = 372,272.40/x
  3. Step 3: Cross multiply
    727,117.20x = 1,089,768.60 × 372,272.40
  4. Step 4: Simplify right side
    727,117.20x = 405,690,772,166.64
  5. Step 5: Solve for x
    x = 405,690,772,166.64/727,117.20
  6. Step 6: Final answer
    x = 557,944.13

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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.