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Finding the Fourth Proportional to 603,528.85, 903,817.05 and 287,616.70

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Solution

The fourth proportional to 603,528.85, 903,817.05 and 287,616.70 is: 430,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,528.85 : 903,817.05 = 287,616.70 : x
  2. Step 2: Convert to fraction form
    603,528.85/903,817.05 = 287,616.70/x
  3. Step 3: Cross multiply
    603,528.85x = 903,817.05 × 287,616.70
  4. Step 4: Simplify right side
    603,528.85x = 259,952,877,324.74
  5. Step 5: Solve for x
    x = 259,952,877,324.74/603,528.85
  6. Step 6: Final answer
    x = 430,721.54

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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.