Home / 666,386.36-999,578.76-217,106.60

Finding the Fourth Proportional to 666,386.36, 999,578.76 and 217,106.60

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Solution

The fourth proportional to 666,386.36, 999,578.76 and 217,106.60 is: 325,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,386.36 : 999,578.76 = 217,106.60 : x
  2. Step 2: Convert to fraction form
    666,386.36/999,578.76 = 217,106.60/x
  3. Step 3: Cross multiply
    666,386.36x = 999,578.76 × 217,106.60
  4. Step 4: Simplify right side
    666,386.36x = 217,015,146,015.82
  5. Step 5: Solve for x
    x = 217,015,146,015.82/666,386.36
  6. Step 6: Final answer
    x = 325,659.65

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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.