Home / 630,297.76-869,816.48-343,819.12

Finding the Fourth Proportional to 630,297.76, 869,816.48 and 343,819.12

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Solution

The fourth proportional to 630,297.76, 869,816.48 and 343,819.12 is: 474,473.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,297.76 : 869,816.48 = 343,819.12 : x
  2. Step 2: Convert to fraction form
    630,297.76/869,816.48 = 343,819.12/x
  3. Step 3: Cross multiply
    630,297.76x = 869,816.48 × 343,819.12
  4. Step 4: Simplify right side
    630,297.76x = 299,059,536,715.10
  5. Step 5: Solve for x
    x = 299,059,536,715.10/630,297.76
  6. Step 6: Final answer
    x = 474,473.42

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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.