Home / 666,986.19-1,000,480.64-312,249.32

Finding the Fourth Proportional to 666,986.19, 1,000,480.64 and 312,249.32

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Solution

The fourth proportional to 666,986.19, 1,000,480.64 and 312,249.32 is: 468,374.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,986.19 : 1,000,480.64 = 312,249.32 : x
  2. Step 2: Convert to fraction form
    666,986.19/1,000,480.64 = 312,249.32/x
  3. Step 3: Cross multiply
    666,986.19x = 1,000,480.64 × 312,249.32
  4. Step 4: Simplify right side
    666,986.19x = 312,399,399,513.17
  5. Step 5: Solve for x
    x = 312,399,399,513.17/666,986.19
  6. Step 6: Final answer
    x = 468,374.61

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1.5x scale

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.