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Finding the Fourth Proportional to 630,451.60, 869,991.24 and 343,969.36

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Solution

The fourth proportional to 630,451.60, 869,991.24 and 343,969.36 is: 474,660.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,451.60 : 869,991.24 = 343,969.36 : x
  2. Step 2: Convert to fraction form
    630,451.60/869,991.24 = 343,969.36/x
  3. Step 3: Cross multiply
    630,451.60x = 869,991.24 × 343,969.36
  4. Step 4: Simplify right side
    630,451.60x = 299,250,330,028.41
  5. Step 5: Solve for x
    x = 299,250,330,028.41/630,451.60
  6. Step 6: Final answer
    x = 474,660.28

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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.