Home / 990,756.29-1,367,662.35-668,902.37

Finding the Fourth Proportional to 990,756.29, 1,367,662.35 and 668,902.37

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Solution

The fourth proportional to 990,756.29, 1,367,662.35 and 668,902.37 is: 923,367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,756.29 : 1,367,662.35 = 668,902.37 : x
  2. Step 2: Convert to fraction form
    990,756.29/1,367,662.35 = 668,902.37/x
  3. Step 3: Cross multiply
    990,756.29x = 1,367,662.35 × 668,902.37
  4. Step 4: Simplify right side
    990,756.29x = 914,832,587,274.77
  5. Step 5: Solve for x
    x = 914,832,587,274.77/990,756.29
  6. Step 6: Final answer
    x = 923,367.93

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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.