Home / 1,245,481.86-1,861,398.66-909,230.58

Finding the Fourth Proportional to 1,245,481.86, 1,861,398.66 and 909,230.58

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Solution

The fourth proportional to 1,245,481.86, 1,861,398.66 and 909,230.58 is: 1,358,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,481.86 : 1,861,398.66 = 909,230.58 : x
  2. Step 2: Convert to fraction form
    1,245,481.86/1,861,398.66 = 909,230.58/x
  3. Step 3: Cross multiply
    1,245,481.86x = 1,861,398.66 × 909,230.58
  4. Step 4: Simplify right side
    1,245,481.86x = 1,692,440,583,243.02
  5. Step 5: Solve for x
    x = 1,692,440,583,243.02/1,245,481.86
  6. Step 6: Final answer
    x = 1,358,864.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.