Home / 1,217,376.64-1,680,015.36-666,125.44

Finding the Fourth Proportional to 1,217,376.64, 1,680,015.36 and 666,125.44

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Solution

The fourth proportional to 1,217,376.64, 1,680,015.36 and 666,125.44 is: 919,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,376.64 : 1,680,015.36 = 666,125.44 : x
  2. Step 2: Convert to fraction form
    1,217,376.64/1,680,015.36 = 666,125.44/x
  3. Step 3: Cross multiply
    1,217,376.64x = 1,680,015.36 × 666,125.44
  4. Step 4: Simplify right side
    1,217,376.64x = 1,119,100,970,886.76
  5. Step 5: Solve for x
    x = 1,119,100,970,886.76/1,217,376.64
  6. Step 6: Final answer
    x = 919,272.59

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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.