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Finding the Fourth Proportional to 430,408.20, 644,834.70 and 368,200.20

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Solution

The fourth proportional to 430,408.20, 644,834.70 and 368,200.20 is: 551,635.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,408.20 : 644,834.70 = 368,200.20 : x
  2. Step 2: Convert to fraction form
    430,408.20/644,834.70 = 368,200.20/x
  3. Step 3: Cross multiply
    430,408.20x = 644,834.70 × 368,200.20
  4. Step 4: Simplify right side
    430,408.20x = 237,428,265,506.94
  5. Step 5: Solve for x
    x = 237,428,265,506.94/430,408.20
  6. Step 6: Final answer
    x = 551,635.09

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1.5x scale

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.