Home / 989,993.36-1,485,015.64-316,074.08

Finding the Fourth Proportional to 989,993.36, 1,485,015.64 and 316,074.08

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Solution

The fourth proportional to 989,993.36, 1,485,015.64 and 316,074.08 is: 474,119.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,993.36 : 1,485,015.64 = 316,074.08 : x
  2. Step 2: Convert to fraction form
    989,993.36/1,485,015.64 = 316,074.08/x
  3. Step 3: Cross multiply
    989,993.36x = 1,485,015.64 × 316,074.08
  4. Step 4: Simplify right side
    989,993.36x = 469,374,952,198.61
  5. Step 5: Solve for x
    x = 469,374,952,198.61/989,993.36
  6. Step 6: Final answer
    x = 474,119.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.