Home / 990,860.85-1,367,342.27-561,144.11

Finding the Fourth Proportional to 990,860.85, 1,367,342.27 and 561,144.11

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Solution

The fourth proportional to 990,860.85, 1,367,342.27 and 561,144.11 is: 774,352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,860.85 : 1,367,342.27 = 561,144.11 : x
  2. Step 2: Convert to fraction form
    990,860.85/1,367,342.27 = 561,144.11/x
  3. Step 3: Cross multiply
    990,860.85x = 1,367,342.27 × 561,144.11
  4. Step 4: Simplify right side
    990,860.85x = 767,276,053,626.39
  5. Step 5: Solve for x
    x = 767,276,053,626.39/990,860.85
  6. Step 6: Final answer
    x = 774,352.98

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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.