Home / 990,887.66-1,367,379.14-561,170.88

Finding the Fourth Proportional to 990,887.66, 1,367,379.14 and 561,170.88

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Solution

The fourth proportional to 990,887.66, 1,367,379.14 and 561,170.88 is: 774,389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,887.66 : 1,367,379.14 = 561,170.88 : x
  2. Step 2: Convert to fraction form
    990,887.66/1,367,379.14 = 561,170.88/x
  3. Step 3: Cross multiply
    990,887.66x = 1,367,379.14 × 561,170.88
  4. Step 4: Simplify right side
    990,887.66x = 767,333,355,287.44
  5. Step 5: Solve for x
    x = 767,333,355,287.44/990,887.66
  6. Step 6: Final answer
    x = 774,389.86

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1.5x scale

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.