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Finding the Fourth Proportional to 604,931.20, 908,052.90 and 339,210.70

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Solution

The fourth proportional to 604,931.20, 908,052.90 and 339,210.70 is: 509,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,931.20 : 908,052.90 = 339,210.70 : x
  2. Step 2: Convert to fraction form
    604,931.20/908,052.90 = 339,210.70/x
  3. Step 3: Cross multiply
    604,931.20x = 908,052.90 × 339,210.70
  4. Step 4: Simplify right side
    604,931.20x = 308,021,259,846.03
  5. Step 5: Solve for x
    x = 308,021,259,846.03/604,931.20
  6. Step 6: Final answer
    x = 509,183.95

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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.