Home / 998,637.76-1,378,120.12-545,928.76

Finding the Fourth Proportional to 998,637.76, 1,378,120.12 and 545,928.76

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Solution

The fourth proportional to 998,637.76, 1,378,120.12 and 545,928.76 is: 753,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,637.76 : 1,378,120.12 = 545,928.76 : x
  2. Step 2: Convert to fraction form
    998,637.76/1,378,120.12 = 545,928.76/x
  3. Step 3: Cross multiply
    998,637.76x = 1,378,120.12 × 545,928.76
  4. Step 4: Simplify right side
    998,637.76x = 752,355,408,242.65
  5. Step 5: Solve for x
    x = 752,355,408,242.65/998,637.76
  6. Step 6: Final answer
    x = 753,381.69

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1.5x scale

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.