Home / 1,245,439.76-1,861,335.94-909,188.51

Finding the Fourth Proportional to 1,245,439.76, 1,861,335.94 and 909,188.51

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Solution

The fourth proportional to 1,245,439.76, 1,861,335.94 and 909,188.51 is: 1,358,801.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,439.76 : 1,861,335.94 = 909,188.51 : x
  2. Step 2: Convert to fraction form
    1,245,439.76/1,861,335.94 = 909,188.51/x
  3. Step 3: Cross multiply
    1,245,439.76x = 1,861,335.94 × 909,188.51
  4. Step 4: Simplify right side
    1,245,439.76x = 1,692,305,249,898.05
  5. Step 5: Solve for x
    x = 1,692,305,249,898.05/1,245,439.76
  6. Step 6: Final answer
    x = 1,358,801.37

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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.