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Finding the Fourth Proportional to 655,383.78, 983,457.99 and 276,281.50

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Solution

The fourth proportional to 655,383.78, 983,457.99 and 276,281.50 is: 414,583.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,383.78 : 983,457.99 = 276,281.50 : x
  2. Step 2: Convert to fraction form
    655,383.78/983,457.99 = 276,281.50/x
  3. Step 3: Cross multiply
    655,383.78x = 983,457.99 × 276,281.50
  4. Step 4: Simplify right side
    655,383.78x = 271,711,248,664.19
  5. Step 5: Solve for x
    x = 271,711,248,664.19/655,383.78
  6. Step 6: Final answer
    x = 414,583.42

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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.