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Finding the Fourth Proportional to 617,283.56, 851,984.53 and 375,643.98

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Solution

The fourth proportional to 617,283.56, 851,984.53 and 375,643.98 is: 518,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,283.56 : 851,984.53 = 375,643.98 : x
  2. Step 2: Convert to fraction form
    617,283.56/851,984.53 = 375,643.98/x
  3. Step 3: Cross multiply
    617,283.56x = 851,984.53 × 375,643.98
  4. Step 4: Simplify right side
    617,283.56x = 320,042,859,747.63
  5. Step 5: Solve for x
    x = 320,042,859,747.63/617,283.56
  6. Step 6: Final answer
    x = 518,469.76

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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.