Home / 659,994.90-990,009.42-210,715.38

Finding the Fourth Proportional to 659,994.90, 990,009.42 and 210,715.38

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Solution

The fourth proportional to 659,994.90, 990,009.42 and 210,715.38 is: 316,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,994.90 : 990,009.42 = 210,715.38 : x
  2. Step 2: Convert to fraction form
    659,994.90/990,009.42 = 210,715.38/x
  3. Step 3: Cross multiply
    659,994.90x = 990,009.42 × 210,715.38
  4. Step 4: Simplify right side
    659,994.90x = 208,610,211,138.88
  5. Step 5: Solve for x
    x = 208,610,211,138.88/659,994.90
  6. Step 6: Final answer
    x = 316,078.52

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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.