Home / 998,086-1,377,392.72-545,406.16

Finding the Fourth Proportional to 998,086, 1,377,392.72 and 545,406.16

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Solution

The fourth proportional to 998,086, 1,377,392.72 and 545,406.16 is: 752,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,086 : 1,377,392.72 = 545,406.16 : x
  2. Step 2: Convert to fraction form
    998,086/1,377,392.72 = 545,406.16/x
  3. Step 3: Cross multiply
    998,086x = 1,377,392.72 × 545,406.16
  4. Step 4: Simplify right side
    998,086x = 751,238,474,227.16
  5. Step 5: Solve for x
    x = 751,238,474,227.16/998,086
  6. Step 6: Final answer
    x = 752,679.10

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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.