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Finding the Fourth Proportional to 5,207,398.56, 7,811,837.28 and 1,613,448

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Solution

The fourth proportional to 5,207,398.56, 7,811,837.28 and 1,613,448 is: 2,420,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207,398.56 : 7,811,837.28 = 1,613,448 : x
  2. Step 2: Convert to fraction form
    5,207,398.56/7,811,837.28 = 1,613,448/x
  3. Step 3: Cross multiply
    5,207,398.56x = 7,811,837.28 × 1,613,448
  4. Step 4: Simplify right side
    5,207,398.56x = 12,603,993,235,741.44
  5. Step 5: Solve for x
    x = 12,603,993,235,741.44/5,207,398.56
  6. Step 6: Final answer
    x = 2,420,401.11

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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.