Home / 990,787.47-1,367,286.64-561,150.64

Finding the Fourth Proportional to 990,787.47, 1,367,286.64 and 561,150.64

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Solution

The fourth proportional to 990,787.47, 1,367,286.64 and 561,150.64 is: 774,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,787.47 : 1,367,286.64 = 561,150.64 : x
  2. Step 2: Convert to fraction form
    990,787.47/1,367,286.64 = 561,150.64/x
  3. Step 3: Cross multiply
    990,787.47x = 1,367,286.64 × 561,150.64
  4. Step 4: Simplify right side
    990,787.47x = 767,253,773,099.45
  5. Step 5: Solve for x
    x = 767,253,773,099.45/990,787.47
  6. Step 6: Final answer
    x = 774,387.84

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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.