Home / 990,822.78-1,367,419.76-561,179.34

Finding the Fourth Proportional to 990,822.78, 1,367,419.76 and 561,179.34

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Solution

The fourth proportional to 990,822.78, 1,367,419.76 and 561,179.34 is: 774,475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,822.78 : 1,367,419.76 = 561,179.34 : x
  2. Step 2: Convert to fraction form
    990,822.78/1,367,419.76 = 561,179.34/x
  3. Step 3: Cross multiply
    990,822.78x = 1,367,419.76 × 561,179.34
  4. Step 4: Simplify right side
    990,822.78x = 767,367,718,419.76
  5. Step 5: Solve for x
    x = 767,367,718,419.76/990,822.78
  6. Step 6: Final answer
    x = 774,475.25

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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.