Home / 990,876.36-1,367,363.66-561,159.60

Finding the Fourth Proportional to 990,876.36, 1,367,363.66 and 561,159.60

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Solution

The fourth proportional to 990,876.36, 1,367,363.66 and 561,159.60 is: 774,374.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,876.36 : 1,367,363.66 = 561,159.60 : x
  2. Step 2: Convert to fraction form
    990,876.36/1,367,363.66 = 561,159.60/x
  3. Step 3: Cross multiply
    990,876.36x = 1,367,363.66 × 561,159.60
  4. Step 4: Simplify right side
    990,876.36x = 767,309,244,500.14
  5. Step 5: Solve for x
    x = 767,309,244,500.14/990,876.36
  6. Step 6: Final answer
    x = 774,374.36

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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.