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Finding the Fourth Proportional to 806,720.10, 1,210,080.15 and 333,744.90

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Solution

The fourth proportional to 806,720.10, 1,210,080.15 and 333,744.90 is: 500,617.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,720.10 : 1,210,080.15 = 333,744.90 : x
  2. Step 2: Convert to fraction form
    806,720.10/1,210,080.15 = 333,744.90/x
  3. Step 3: Cross multiply
    806,720.10x = 1,210,080.15 × 333,744.90
  4. Step 4: Simplify right side
    806,720.10x = 403,858,078,653.74
  5. Step 5: Solve for x
    x = 403,858,078,653.74/806,720.10
  6. Step 6: Final answer
    x = 500,617.35

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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.