Home / 1,291,820.92-1,783,590.78-808,581.40

Finding the Fourth Proportional to 1,291,820.92, 1,783,590.78 and 808,581.40

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Solution

The fourth proportional to 1,291,820.92, 1,783,590.78 and 808,581.40 is: 1,116,391.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,820.92 : 1,783,590.78 = 808,581.40 : x
  2. Step 2: Convert to fraction form
    1,291,820.92/1,783,590.78 = 808,581.40/x
  3. Step 3: Cross multiply
    1,291,820.92x = 1,783,590.78 × 808,581.40
  4. Step 4: Simplify right side
    1,291,820.92x = 1,442,178,329,919.49
  5. Step 5: Solve for x
    x = 1,442,178,329,919.49/1,291,820.92
  6. Step 6: Final answer
    x = 1,116,391.84

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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.