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Finding the Fourth Proportional to 1,603,656, 2,405,626.08 and 421,704

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Solution

The fourth proportional to 1,603,656, 2,405,626.08 and 421,704 is: 632,593.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603,656 : 2,405,626.08 = 421,704 : x
  2. Step 2: Convert to fraction form
    1,603,656/2,405,626.08 = 421,704/x
  3. Step 3: Cross multiply
    1,603,656x = 2,405,626.08 × 421,704
  4. Step 4: Simplify right side
    1,603,656x = 1,014,462,140,440.32
  5. Step 5: Solve for x
    x = 1,014,462,140,440.32/1,603,656
  6. Step 6: Final answer
    x = 632,593.36

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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.