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Finding the Fourth Proportional to 430,601.60, 645,902.40 and 337,187.20

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Solution

The fourth proportional to 430,601.60, 645,902.40 and 337,187.20 is: 505,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,601.60 : 645,902.40 = 337,187.20 : x
  2. Step 2: Convert to fraction form
    430,601.60/645,902.40 = 337,187.20/x
  3. Step 3: Cross multiply
    430,601.60x = 645,902.40 × 337,187.20
  4. Step 4: Simplify right side
    430,601.60x = 217,790,021,729.28
  5. Step 5: Solve for x
    x = 217,790,021,729.28/430,601.60
  6. Step 6: Final answer
    x = 505,780.80

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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.