Home / 1,209,684.86-1,669,351.91-665,808.96

Finding the Fourth Proportional to 1,209,684.86, 1,669,351.91 and 665,808.96

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Solution

The fourth proportional to 1,209,684.86, 1,669,351.91 and 665,808.96 is: 918,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,684.86 : 1,669,351.91 = 665,808.96 : x
  2. Step 2: Convert to fraction form
    1,209,684.86/1,669,351.91 = 665,808.96/x
  3. Step 3: Cross multiply
    1,209,684.86x = 1,669,351.91 × 665,808.96
  4. Step 4: Simplify right side
    1,209,684.86x = 1,111,469,455,742.07
  5. Step 5: Solve for x
    x = 1,111,469,455,742.07/1,209,684.86
  6. Step 6: Final answer
    x = 918,809.10

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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.