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Finding the Fourth Proportional to 630,241.36, 869,735.80 and 343,767.60

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Solution

The fourth proportional to 630,241.36, 869,735.80 and 343,767.60 is: 474,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,241.36 : 869,735.80 = 343,767.60 : x
  2. Step 2: Convert to fraction form
    630,241.36/869,735.80 = 343,767.60/x
  3. Step 3: Cross multiply
    630,241.36x = 869,735.80 × 343,767.60
  4. Step 4: Simplify right side
    630,241.36x = 298,986,988,600.08
  5. Step 5: Solve for x
    x = 298,986,988,600.08/630,241.36
  6. Step 6: Final answer
    x = 474,400.77

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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.