Home / 1,245,438.76-1,861,334.45-909,187.51

Finding the Fourth Proportional to 1,245,438.76, 1,861,334.45 and 909,187.51

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Solution

The fourth proportional to 1,245,438.76, 1,861,334.45 and 909,187.51 is: 1,358,799.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,438.76 : 1,861,334.45 = 909,187.51 : x
  2. Step 2: Convert to fraction form
    1,245,438.76/1,861,334.45 = 909,187.51/x
  3. Step 3: Cross multiply
    1,245,438.76x = 1,861,334.45 × 909,187.51
  4. Step 4: Simplify right side
    1,245,438.76x = 1,692,302,033,872.72
  5. Step 5: Solve for x
    x = 1,692,302,033,872.72/1,245,438.76
  6. Step 6: Final answer
    x = 1,358,799.88

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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.