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Finding the Fourth Proportional to 3,379,316, 5,068,980.48 and 820,520.16

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Solution

The fourth proportional to 3,379,316, 5,068,980.48 and 820,520.16 is: 1,230,781.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379,316 : 5,068,980.48 = 820,520.16 : x
  2. Step 2: Convert to fraction form
    3,379,316/5,068,980.48 = 820,520.16/x
  3. Step 3: Cross multiply
    3,379,316x = 5,068,980.48 × 820,520.16
  4. Step 4: Simplify right side
    3,379,316x = 4,159,200,674,486.48
  5. Step 5: Solve for x
    x = 4,159,200,674,486.48/3,379,316
  6. Step 6: Final answer
    x = 1,230,781.81

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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.