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Finding the Fourth Proportional to 651,798.64, 899,466.74 and 361,408.78

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Solution

The fourth proportional to 651,798.64, 899,466.74 and 361,408.78 is: 498,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,798.64 : 899,466.74 = 361,408.78 : x
  2. Step 2: Convert to fraction form
    651,798.64/899,466.74 = 361,408.78/x
  3. Step 3: Cross multiply
    651,798.64x = 899,466.74 × 361,408.78
  4. Step 4: Simplify right side
    651,798.64x = 325,075,177,153.98
  5. Step 5: Solve for x
    x = 325,075,177,153.98/651,798.64
  6. Step 6: Final answer
    x = 498,735.59

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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.