Home / 990,726.07-1,367,620.50-668,872.12

Finding the Fourth Proportional to 990,726.07, 1,367,620.50 and 668,872.12

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Solution

The fourth proportional to 990,726.07, 1,367,620.50 and 668,872.12 is: 923,326.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,726.07 : 1,367,620.50 = 668,872.12 : x
  2. Step 2: Convert to fraction form
    990,726.07/1,367,620.50 = 668,872.12/x
  3. Step 3: Cross multiply
    990,726.07x = 1,367,620.50 × 668,872.12
  4. Step 4: Simplify right side
    990,726.07x = 914,763,223,190.46
  5. Step 5: Solve for x
    x = 914,763,223,190.46/990,726.07
  6. Step 6: Final answer
    x = 923,326.08

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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.