Home / 1,258,090.56-1,736,133.12-721,512

Finding the Fourth Proportional to 1,258,090.56, 1,736,133.12 and 721,512

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Solution

The fourth proportional to 1,258,090.56, 1,736,133.12 and 721,512 is: 995,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,090.56 : 1,736,133.12 = 721,512 : x
  2. Step 2: Convert to fraction form
    1,258,090.56/1,736,133.12 = 721,512/x
  3. Step 3: Cross multiply
    1,258,090.56x = 1,736,133.12 × 721,512
  4. Step 4: Simplify right side
    1,258,090.56x = 1,252,640,879,677.44
  5. Step 5: Solve for x
    x = 1,252,640,879,677.44/1,258,090.56
  6. Step 6: Final answer
    x = 995,668.29

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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.