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Finding the Fourth Proportional to 557,086.70, 835,630.05 and 521,657.30

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Solution

The fourth proportional to 557,086.70, 835,630.05 and 521,657.30 is: 782,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,086.70 : 835,630.05 = 521,657.30 : x
  2. Step 2: Convert to fraction form
    557,086.70/835,630.05 = 521,657.30/x
  3. Step 3: Cross multiply
    557,086.70x = 835,630.05 × 521,657.30
  4. Step 4: Simplify right side
    557,086.70x = 435,912,515,681.87
  5. Step 5: Solve for x
    x = 435,912,515,681.87/557,086.70
  6. Step 6: Final answer
    x = 782,485.95

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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.