Home / 1,217,815.08-1,680,558.24-666,528.12

Finding the Fourth Proportional to 1,217,815.08, 1,680,558.24 and 666,528.12

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Solution

The fourth proportional to 1,217,815.08, 1,680,558.24 and 666,528.12 is: 919,794.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,815.08 : 1,680,558.24 = 666,528.12 : x
  2. Step 2: Convert to fraction form
    1,217,815.08/1,680,558.24 = 666,528.12/x
  3. Step 3: Cross multiply
    1,217,815.08x = 1,680,558.24 × 666,528.12
  4. Step 4: Simplify right side
    1,217,815.08x = 1,120,139,324,257.71
  5. Step 5: Solve for x
    x = 1,120,139,324,257.71/1,217,815.08
  6. Step 6: Final answer
    x = 919,794.26

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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.