Home / 659,396.79-989,084.27-210,111.55

Finding the Fourth Proportional to 659,396.79, 989,084.27 and 210,111.55

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Solution

The fourth proportional to 659,396.79, 989,084.27 and 210,111.55 is: 315,163.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,396.79 : 989,084.27 = 210,111.55 : x
  2. Step 2: Convert to fraction form
    659,396.79/989,084.27 = 210,111.55/x
  3. Step 3: Cross multiply
    659,396.79x = 989,084.27 × 210,111.55
  4. Step 4: Simplify right side
    659,396.79x = 207,818,029,050.32
  5. Step 5: Solve for x
    x = 207,818,029,050.32/659,396.79
  6. Step 6: Final answer
    x = 315,163.85

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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.