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Finding the Fourth Proportional to 526,663.40, 788,658.60 and 289,738.40

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Solution

The fourth proportional to 526,663.40, 788,658.60 and 289,738.40 is: 433,872.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,663.40 : 788,658.60 = 289,738.40 : x
  2. Step 2: Convert to fraction form
    526,663.40/788,658.60 = 289,738.40/x
  3. Step 3: Cross multiply
    526,663.40x = 788,658.60 × 289,738.40
  4. Step 4: Simplify right side
    526,663.40x = 228,504,680,910.24
  5. Step 5: Solve for x
    x = 228,504,680,910.24/526,663.40
  6. Step 6: Final answer
    x = 433,872.34

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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.