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Finding the Fourth Proportional to 630,207.70, 869,697 and 343,727.79

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Solution

The fourth proportional to 630,207.70, 869,697 and 343,727.79 is: 474,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,207.70 : 869,697 = 343,727.79 : x
  2. Step 2: Convert to fraction form
    630,207.70/869,697 = 343,727.79/x
  3. Step 3: Cross multiply
    630,207.70x = 869,697 × 343,727.79
  4. Step 4: Simplify right side
    630,207.70x = 298,939,028,187.30
  5. Step 5: Solve for x
    x = 298,939,028,187.30/630,207.70
  6. Step 6: Final answer
    x = 474,350.01

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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.