Home / 1,421,185.60-1,961,347.92-809,364.24

Finding the Fourth Proportional to 1,421,185.60, 1,961,347.92 and 809,364.24

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Solution

The fourth proportional to 1,421,185.60, 1,961,347.92 and 809,364.24 is: 1,116,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,185.60 : 1,961,347.92 = 809,364.24 : x
  2. Step 2: Convert to fraction form
    1,421,185.60/1,961,347.92 = 809,364.24/x
  3. Step 3: Cross multiply
    1,421,185.60x = 1,961,347.92 × 809,364.24
  4. Step 4: Simplify right side
    1,421,185.60x = 1,587,444,868,646.38
  5. Step 5: Solve for x
    x = 1,587,444,868,646.38/1,421,185.60
  6. Step 6: Final answer
    x = 1,116,986.32

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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.