Home / 1,292,313.60-1,783,363.20-809,145.15

Finding the Fourth Proportional to 1,292,313.60, 1,783,363.20 and 809,145.15

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Solution

The fourth proportional to 1,292,313.60, 1,783,363.20 and 809,145.15 is: 1,116,601.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,313.60 : 1,783,363.20 = 809,145.15 : x
  2. Step 2: Convert to fraction form
    1,292,313.60/1,783,363.20 = 809,145.15/x
  3. Step 3: Cross multiply
    1,292,313.60x = 1,783,363.20 × 809,145.15
  4. Step 4: Simplify right side
    1,292,313.60x = 1,442,999,683,968.48
  5. Step 5: Solve for x
    x = 1,442,999,683,968.48/1,292,313.60
  6. Step 6: Final answer
    x = 1,116,601.79

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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.