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Finding the Fourth Proportional to 737,435.78, 1,106,153.68 and 421,671.20

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Solution

The fourth proportional to 737,435.78, 1,106,153.68 and 421,671.20 is: 632,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,435.78 : 1,106,153.68 = 421,671.20 : x
  2. Step 2: Convert to fraction form
    737,435.78/1,106,153.68 = 421,671.20/x
  3. Step 3: Cross multiply
    737,435.78x = 1,106,153.68 × 421,671.20
  4. Step 4: Simplify right side
    737,435.78x = 466,433,149,630.02
  5. Step 5: Solve for x
    x = 466,433,149,630.02/737,435.78
  6. Step 6: Final answer
    x = 632,506.81

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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.