Home / 977,407.21-1,348,022.26-687,976.90

Finding the Fourth Proportional to 977,407.21, 1,348,022.26 and 687,976.90

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Solution

The fourth proportional to 977,407.21, 1,348,022.26 and 687,976.90 is: 948,845.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,407.21 : 1,348,022.26 = 687,976.90 : x
  2. Step 2: Convert to fraction form
    977,407.21/1,348,022.26 = 687,976.90/x
  3. Step 3: Cross multiply
    977,407.21x = 1,348,022.26 × 687,976.90
  4. Step 4: Simplify right side
    977,407.21x = 927,408,168,825.68
  5. Step 5: Solve for x
    x = 927,408,168,825.68/977,407.21
  6. Step 6: Final answer
    x = 948,845.23

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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.