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Finding the Fourth Proportional to 807,643.10, 1,114,494.77 and 445,066.88

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Solution

The fourth proportional to 807,643.10, 1,114,494.77 and 445,066.88 is: 614,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,643.10 : 1,114,494.77 = 445,066.88 : x
  2. Step 2: Convert to fraction form
    807,643.10/1,114,494.77 = 445,066.88/x
  3. Step 3: Cross multiply
    807,643.10x = 1,114,494.77 × 445,066.88
  4. Step 4: Simplify right side
    807,643.10x = 496,024,707,483.18
  5. Step 5: Solve for x
    x = 496,024,707,483.18/807,643.10
  6. Step 6: Final answer
    x = 614,163.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.