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Finding the Fourth Proportional to 559,704.88, 772,409.04 and 305,072.56

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Solution

The fourth proportional to 559,704.88, 772,409.04 and 305,072.56 is: 421,009.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,704.88 : 772,409.04 = 305,072.56 : x
  2. Step 2: Convert to fraction form
    559,704.88/772,409.04 = 305,072.56/x
  3. Step 3: Cross multiply
    559,704.88x = 772,409.04 × 305,072.56
  4. Step 4: Simplify right side
    559,704.88x = 235,640,803,199.94
  5. Step 5: Solve for x
    x = 235,640,803,199.94/559,704.88
  6. Step 6: Final answer
    x = 421,009.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.