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Finding the Fourth Proportional to 437,880.20, 656,820.30 and 402,450.80

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Solution

The fourth proportional to 437,880.20, 656,820.30 and 402,450.80 is: 603,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,880.20 : 656,820.30 = 402,450.80 : x
  2. Step 2: Convert to fraction form
    437,880.20/656,820.30 = 402,450.80/x
  3. Step 3: Cross multiply
    437,880.20x = 656,820.30 × 402,450.80
  4. Step 4: Simplify right side
    437,880.20x = 264,337,855,191.24
  5. Step 5: Solve for x
    x = 264,337,855,191.24/437,880.20
  6. Step 6: Final answer
    x = 603,676.20

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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.