Home / 630,419.49-869,961.60-343,939.50

Finding the Fourth Proportional to 630,419.49, 869,961.60 and 343,939.50

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Solution

The fourth proportional to 630,419.49, 869,961.60 and 343,939.50 is: 474,627.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,419.49 : 869,961.60 = 343,939.50 : x
  2. Step 2: Convert to fraction form
    630,419.49/869,961.60 = 343,939.50/x
  3. Step 3: Cross multiply
    630,419.49x = 869,961.60 × 343,939.50
  4. Step 4: Simplify right side
    630,419.49x = 299,214,157,723.20
  5. Step 5: Solve for x
    x = 299,214,157,723.20/630,419.49
  6. Step 6: Final answer
    x = 474,627.07

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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.