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Finding the Fourth Proportional to 603,932.40, 904,861.80 and 287,708.40

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Solution

The fourth proportional to 603,932.40, 904,861.80 and 287,708.40 is: 431,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,932.40 : 904,861.80 = 287,708.40 : x
  2. Step 2: Convert to fraction form
    603,932.40/904,861.80 = 287,708.40/x
  3. Step 3: Cross multiply
    603,932.40x = 904,861.80 × 287,708.40
  4. Step 4: Simplify right side
    603,932.40x = 260,336,340,699.12
  5. Step 5: Solve for x
    x = 260,336,340,699.12/603,932.40
  6. Step 6: Final answer
    x = 431,068.68

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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.