Home / 990,822.72-1,367,419.68-561,179.28

Finding the Fourth Proportional to 990,822.72, 1,367,419.68 and 561,179.28

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Solution

The fourth proportional to 990,822.72, 1,367,419.68 and 561,179.28 is: 774,475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,822.72 : 1,367,419.68 = 561,179.28 : x
  2. Step 2: Convert to fraction form
    990,822.72/1,367,419.68 = 561,179.28/x
  3. Step 3: Cross multiply
    990,822.72x = 1,367,419.68 × 561,179.28
  4. Step 4: Simplify right side
    990,822.72x = 767,367,591,480.23
  5. Step 5: Solve for x
    x = 767,367,591,480.23/990,822.72
  6. Step 6: Final answer
    x = 774,475.17

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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.