Home / 913,682.76-1,258,628.40-777,279.60

Finding the Fourth Proportional to 913,682.76, 1,258,628.40 and 777,279.60

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Solution

The fourth proportional to 913,682.76, 1,258,628.40 and 777,279.60 is: 1,070,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,682.76 : 1,258,628.40 = 777,279.60 : x
  2. Step 2: Convert to fraction form
    913,682.76/1,258,628.40 = 777,279.60/x
  3. Step 3: Cross multiply
    913,682.76x = 1,258,628.40 × 777,279.60
  4. Step 4: Simplify right side
    913,682.76x = 978,306,179,300.64
  5. Step 5: Solve for x
    x = 978,306,179,300.64/913,682.76
  6. Step 6: Final answer
    x = 1,070,728.51

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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.