Home / 1,291,819.92-1,783,589.40-808,580.40

Finding the Fourth Proportional to 1,291,819.92, 1,783,589.40 and 808,580.40

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Solution

The fourth proportional to 1,291,819.92, 1,783,589.40 and 808,580.40 is: 1,116,390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,819.92 : 1,783,589.40 = 808,580.40 : x
  2. Step 2: Convert to fraction form
    1,291,819.92/1,783,589.40 = 808,580.40/x
  3. Step 3: Cross multiply
    1,291,819.92x = 1,783,589.40 × 808,580.40
  4. Step 4: Simplify right side
    1,291,819.92x = 1,442,175,430,487.76
  5. Step 5: Solve for x
    x = 1,442,175,430,487.76/1,291,819.92
  6. Step 6: Final answer
    x = 1,116,390.46

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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.