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Finding the Fourth Proportional to 603,385.38, 903,700.26 and 288,063.72

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Solution

The fourth proportional to 603,385.38, 903,700.26 and 288,063.72 is: 431,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,385.38 : 903,700.26 = 288,063.72 : x
  2. Step 2: Convert to fraction form
    603,385.38/903,700.26 = 288,063.72/x
  3. Step 3: Cross multiply
    603,385.38x = 903,700.26 × 288,063.72
  4. Step 4: Simplify right side
    603,385.38x = 260,323,258,660.57
  5. Step 5: Solve for x
    x = 260,323,258,660.57/603,385.38
  6. Step 6: Final answer
    x = 431,437.80

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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.