Home / 668,860.54-1,003,618.86-313,903.42

Finding the Fourth Proportional to 668,860.54, 1,003,618.86 and 313,903.42

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Solution

The fourth proportional to 668,860.54, 1,003,618.86 and 313,903.42 is: 471,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,860.54 : 1,003,618.86 = 313,903.42 : x
  2. Step 2: Convert to fraction form
    668,860.54/1,003,618.86 = 313,903.42/x
  3. Step 3: Cross multiply
    668,860.54x = 1,003,618.86 × 313,903.42
  4. Step 4: Simplify right side
    668,860.54x = 315,039,392,530.50
  5. Step 5: Solve for x
    x = 315,039,392,530.50/668,860.54
  6. Step 6: Final answer
    x = 471,009.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.