Home / 990,719.06-1,367,610.80-668,865.10

Finding the Fourth Proportional to 990,719.06, 1,367,610.80 and 668,865.10

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Solution

The fourth proportional to 990,719.06, 1,367,610.80 and 668,865.10 is: 923,316.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,719.06 : 1,367,610.80 = 668,865.10 : x
  2. Step 2: Convert to fraction form
    990,719.06/1,367,610.80 = 668,865.10/x
  3. Step 3: Cross multiply
    990,719.06x = 1,367,610.80 × 668,865.10
  4. Step 4: Simplify right side
    990,719.06x = 914,747,134,503.08
  5. Step 5: Solve for x
    x = 914,747,134,503.08/990,719.06
  6. Step 6: Final answer
    x = 923,316.38

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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.