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Finding the Fourth Proportional to 571,687.48, 788,916.87 and 353,838.34

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Solution

The fourth proportional to 571,687.48, 788,916.87 and 353,838.34 is: 488,289.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,687.48 : 788,916.87 = 353,838.34 : x
  2. Step 2: Convert to fraction form
    571,687.48/788,916.87 = 353,838.34/x
  3. Step 3: Cross multiply
    571,687.48x = 788,916.87 × 353,838.34
  4. Step 4: Simplify right side
    571,687.48x = 279,149,035,678.80
  5. Step 5: Solve for x
    x = 279,149,035,678.80/571,687.48
  6. Step 6: Final answer
    x = 488,289.57

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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.