Home / 809,915.64-1,117,079.46-718,142.64

Finding the Fourth Proportional to 809,915.64, 1,117,079.46 and 718,142.64

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Solution

The fourth proportional to 809,915.64, 1,117,079.46 and 718,142.64 is: 990,501.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,915.64 : 1,117,079.46 = 718,142.64 : x
  2. Step 2: Convert to fraction form
    809,915.64/1,117,079.46 = 718,142.64/x
  3. Step 3: Cross multiply
    809,915.64x = 1,117,079.46 × 718,142.64
  4. Step 4: Simplify right side
    809,915.64x = 802,222,392,494.18
  5. Step 5: Solve for x
    x = 802,222,392,494.18/809,915.64
  6. Step 6: Final answer
    x = 990,501.17

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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.