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Finding the Fourth Proportional to 603,670.40, 904,468.80 and 287,446.40

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Solution

The fourth proportional to 603,670.40, 904,468.80 and 287,446.40 is: 430,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,670.40 : 904,468.80 = 287,446.40 : x
  2. Step 2: Convert to fraction form
    603,670.40/904,468.80 = 287,446.40/x
  3. Step 3: Cross multiply
    603,670.40x = 904,468.80 × 287,446.40
  4. Step 4: Simplify right side
    603,670.40x = 259,986,300,472.32
  5. Step 5: Solve for x
    x = 259,986,300,472.32/603,670.40
  6. Step 6: Final answer
    x = 430,675.91

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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.