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Finding the Fourth Proportional to 603,896.40, 904,807.80 and 287,672.40

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Solution

The fourth proportional to 603,896.40, 904,807.80 and 287,672.40 is: 431,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,896.40 : 904,807.80 = 287,672.40 : x
  2. Step 2: Convert to fraction form
    603,896.40/904,807.80 = 287,672.40/x
  3. Step 3: Cross multiply
    603,896.40x = 904,807.80 × 287,672.40
  4. Step 4: Simplify right side
    603,896.40x = 260,288,231,364.72
  5. Step 5: Solve for x
    x = 260,288,231,364.72/603,896.40
  6. Step 6: Final answer
    x = 431,014.71

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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.