Home / 990,754.29-1,367,659.59-668,900.37

Finding the Fourth Proportional to 990,754.29, 1,367,659.59 and 668,900.37

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Solution

The fourth proportional to 990,754.29, 1,367,659.59 and 668,900.37 is: 923,365.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,754.29 : 1,367,659.59 = 668,900.37 : x
  2. Step 2: Convert to fraction form
    990,754.29/1,367,659.59 = 668,900.37/x
  3. Step 3: Cross multiply
    990,754.29x = 1,367,659.59 × 668,900.37
  4. Step 4: Simplify right side
    990,754.29x = 914,828,005,785.05
  5. Step 5: Solve for x
    x = 914,828,005,785.05/990,754.29
  6. Step 6: Final answer
    x = 923,365.17

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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.