Home / 911,743.44-1,258,209.80-498,288.66

Finding the Fourth Proportional to 911,743.44, 1,258,209.80 and 498,288.66

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Solution

The fourth proportional to 911,743.44, 1,258,209.80 and 498,288.66 is: 687,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,743.44 : 1,258,209.80 = 498,288.66 : x
  2. Step 2: Convert to fraction form
    911,743.44/1,258,209.80 = 498,288.66/x
  3. Step 3: Cross multiply
    911,743.44x = 1,258,209.80 × 498,288.66
  4. Step 4: Simplify right side
    911,743.44x = 626,951,679,780.02
  5. Step 5: Solve for x
    x = 626,951,679,780.02/911,743.44
  6. Step 6: Final answer
    x = 687,640.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.