Home / 990,866.85-1,367,350.56-561,150.11

Finding the Fourth Proportional to 990,866.85, 1,367,350.56 and 561,150.11

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Solution

The fourth proportional to 990,866.85, 1,367,350.56 and 561,150.11 is: 774,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,866.85 : 1,367,350.56 = 561,150.11 : x
  2. Step 2: Convert to fraction form
    990,866.85/1,367,350.56 = 561,150.11/x
  3. Step 3: Cross multiply
    990,866.85x = 1,367,350.56 × 561,150.11
  4. Step 4: Simplify right side
    990,866.85x = 767,288,910,315.81
  5. Step 5: Solve for x
    x = 767,288,910,315.81/990,866.85
  6. Step 6: Final answer
    x = 774,361.27

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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.