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Finding the Fourth Proportional to 531,878.40, 796,505.40 and 353,419.20

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Solution

The fourth proportional to 531,878.40, 796,505.40 and 353,419.20 is: 529,256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,878.40 : 796,505.40 = 353,419.20 : x
  2. Step 2: Convert to fraction form
    531,878.40/796,505.40 = 353,419.20/x
  3. Step 3: Cross multiply
    531,878.40x = 796,505.40 × 353,419.20
  4. Step 4: Simplify right side
    531,878.40x = 281,500,301,263.68
  5. Step 5: Solve for x
    x = 281,500,301,263.68/531,878.40
  6. Step 6: Final answer
    x = 529,256.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.