Home / 1,386,469.07-1,912,999.28-805,346.96

Finding the Fourth Proportional to 1,386,469.07, 1,912,999.28 and 805,346.96

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Solution

The fourth proportional to 1,386,469.07, 1,912,999.28 and 805,346.96 is: 1,111,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,469.07 : 1,912,999.28 = 805,346.96 : x
  2. Step 2: Convert to fraction form
    1,386,469.07/1,912,999.28 = 805,346.96/x
  3. Step 3: Cross multiply
    1,386,469.07x = 1,912,999.28 × 805,346.96
  4. Step 4: Simplify right side
    1,386,469.07x = 1,540,628,154,630.19
  5. Step 5: Solve for x
    x = 1,540,628,154,630.19/1,386,469.07
  6. Step 6: Final answer
    x = 1,111,188.26

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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.