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Finding the Fourth Proportional to 559,557.89, 839,544.65 and 388,689.57

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Solution

The fourth proportional to 559,557.89, 839,544.65 and 388,689.57 is: 583,178.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,557.89 : 839,544.65 = 388,689.57 : x
  2. Step 2: Convert to fraction form
    559,557.89/839,544.65 = 388,689.57/x
  3. Step 3: Cross multiply
    559,557.89x = 839,544.65 × 388,689.57
  4. Step 4: Simplify right side
    559,557.89x = 326,322,247,060.85
  5. Step 5: Solve for x
    x = 326,322,247,060.85/559,557.89
  6. Step 6: Final answer
    x = 583,178.71

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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.