Home / 990,958.40-1,367,540.53-561,327.74

Finding the Fourth Proportional to 990,958.40, 1,367,540.53 and 561,327.74

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Solution

The fourth proportional to 990,958.40, 1,367,540.53 and 561,327.74 is: 774,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,958.40 : 1,367,540.53 = 561,327.74 : x
  2. Step 2: Convert to fraction form
    990,958.40/1,367,540.53 = 561,327.74/x
  3. Step 3: Cross multiply
    990,958.40x = 1,367,540.53 × 561,327.74
  4. Step 4: Simplify right side
    990,958.40x = 767,638,426,822.28
  5. Step 5: Solve for x
    x = 767,638,426,822.28/990,958.40
  6. Step 6: Final answer
    x = 774,642.44

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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.