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Finding the Fourth Proportional to 528,586.56, 729,155.52 and 347,328

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Solution

The fourth proportional to 528,586.56, 729,155.52 and 347,328 is: 479,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,586.56 : 729,155.52 = 347,328 : x
  2. Step 2: Convert to fraction form
    528,586.56/729,155.52 = 347,328/x
  3. Step 3: Cross multiply
    528,586.56x = 729,155.52 × 347,328
  4. Step 4: Simplify right side
    528,586.56x = 253,256,128,450.56
  5. Step 5: Solve for x
    x = 253,256,128,450.56/528,586.56
  6. Step 6: Final answer
    x = 479,119.50

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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.