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Finding the Fourth Proportional to 657,478.56, 985,394.56 and 353,124.78

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Solution

The fourth proportional to 657,478.56, 985,394.56 and 353,124.78 is: 529,245.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,478.56 : 985,394.56 = 353,124.78 : x
  2. Step 2: Convert to fraction form
    657,478.56/985,394.56 = 353,124.78/x
  3. Step 3: Cross multiply
    657,478.56x = 985,394.56 × 353,124.78
  4. Step 4: Simplify right side
    657,478.56x = 347,967,237,213.20
  5. Step 5: Solve for x
    x = 347,967,237,213.20/657,478.56
  6. Step 6: Final answer
    x = 529,245.00

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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.