Home / 990,927.72-1,486,268.46-317,079

Finding the Fourth Proportional to 990,927.72, 1,486,268.46 and 317,079

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Solution

The fourth proportional to 990,927.72, 1,486,268.46 and 317,079 is: 475,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,927.72 : 1,486,268.46 = 317,079 : x
  2. Step 2: Convert to fraction form
    990,927.72/1,486,268.46 = 317,079/x
  3. Step 3: Cross multiply
    990,927.72x = 1,486,268.46 × 317,079
  4. Step 4: Simplify right side
    990,927.72x = 471,264,517,028.34
  5. Step 5: Solve for x
    x = 471,264,517,028.34/990,927.72
  6. Step 6: Final answer
    x = 475,579.10

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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.