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Finding the Fourth Proportional to 389,478.64, 580,945.61 and 353,600.92

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Solution

The fourth proportional to 389,478.64, 580,945.61 and 353,600.92 is: 527,430.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,478.64 : 580,945.61 = 353,600.92 : x
  2. Step 2: Convert to fraction form
    389,478.64/580,945.61 = 353,600.92/x
  3. Step 3: Cross multiply
    389,478.64x = 580,945.61 × 353,600.92
  4. Step 4: Simplify right side
    389,478.64x = 205,422,902,165.96
  5. Step 5: Solve for x
    x = 205,422,902,165.96/389,478.64
  6. Step 6: Final answer
    x = 527,430.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.