Home / 990,676.56-1,367,138.88-561,040.32

Finding the Fourth Proportional to 990,676.56, 1,367,138.88 and 561,040.32

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Solution

The fourth proportional to 990,676.56, 1,367,138.88 and 561,040.32 is: 774,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,676.56 : 1,367,138.88 = 561,040.32 : x
  2. Step 2: Convert to fraction form
    990,676.56/1,367,138.88 = 561,040.32/x
  3. Step 3: Cross multiply
    990,676.56x = 1,367,138.88 × 561,040.32
  4. Step 4: Simplify right side
    990,676.56x = 767,020,034,719.64
  5. Step 5: Solve for x
    x = 767,020,034,719.64/990,676.56
  6. Step 6: Final answer
    x = 774,238.60

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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.