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Finding the Fourth Proportional to 875,668.73, 1,208,375.94 and 493,670.90

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Solution

The fourth proportional to 875,668.73, 1,208,375.94 and 493,670.90 is: 681,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,668.73 : 1,208,375.94 = 493,670.90 : x
  2. Step 2: Convert to fraction form
    875,668.73/1,208,375.94 = 493,670.90/x
  3. Step 3: Cross multiply
    875,668.73x = 1,208,375.94 × 493,670.90
  4. Step 4: Simplify right side
    875,668.73x = 596,540,037,838.15
  5. Step 5: Solve for x
    x = 596,540,037,838.15/875,668.73
  6. Step 6: Final answer
    x = 681,239.40

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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.