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Finding the Fourth Proportional to 630,247.36, 869,744.08 and 343,773.60

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Solution

The fourth proportional to 630,247.36, 869,744.08 and 343,773.60 is: 474,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,247.36 : 869,744.08 = 343,773.60 : x
  2. Step 2: Convert to fraction form
    630,247.36/869,744.08 = 343,773.60/x
  3. Step 3: Cross multiply
    630,247.36x = 869,744.08 × 343,773.60
  4. Step 4: Simplify right side
    630,247.36x = 298,995,053,460.29
  5. Step 5: Solve for x
    x = 298,995,053,460.29/630,247.36
  6. Step 6: Final answer
    x = 474,409.05

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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.