Home / 1,120,002.21-1,680,009.39-278,553.96

Finding the Fourth Proportional to 1,120,002.21, 1,680,009.39 and 278,553.96

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Solution

The fourth proportional to 1,120,002.21, 1,680,009.39 and 278,553.96 is: 417,832.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,002.21 : 1,680,009.39 = 278,553.96 : x
  2. Step 2: Convert to fraction form
    1,120,002.21/1,680,009.39 = 278,553.96/x
  3. Step 3: Cross multiply
    1,120,002.21x = 1,680,009.39 × 278,553.96
  4. Step 4: Simplify right side
    1,120,002.21x = 467,973,268,421.68
  5. Step 5: Solve for x
    x = 467,973,268,421.68/1,120,002.21
  6. Step 6: Final answer
    x = 417,832.45

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1.5x scale

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.