Home / 579,550,917.60-799,707,517.92-391,787,643.69

Finding the Fourth Proportional to 579,550,917.60, 799,707,517.92 and 391,787,643.69

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Solution

The fourth proportional to 579,550,917.60, 799,707,517.92 and 391,787,643.69 is: 540,617,768.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,550,917.60 : 799,707,517.92 = 391,787,643.69 : x
  2. Step 2: Convert to fraction form
    579,550,917.60/799,707,517.92 = 391,787,643.69/x
  3. Step 3: Cross multiply
    579,550,917.60x = 799,707,517.92 × 391,787,643.69
  4. Step 4: Simplify right side
    579,550,917.60x = 313,315,524,087,055,232
  5. Step 5: Solve for x
    x = 313,315,524,087,055,232/579,550,917.60
  6. Step 6: Final answer
    x = 540,617,768.99

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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.