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Finding the Fourth Proportional to 528,501.33, 729,324 and 310,734.54

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Solution

The fourth proportional to 528,501.33, 729,324 and 310,734.54 is: 428,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,501.33 : 729,324 = 310,734.54 : x
  2. Step 2: Convert to fraction form
    528,501.33/729,324 = 310,734.54/x
  3. Step 3: Cross multiply
    528,501.33x = 729,324 × 310,734.54
  4. Step 4: Simplify right side
    528,501.33x = 226,626,157,650.96
  5. Step 5: Solve for x
    x = 226,626,157,650.96/528,501.33
  6. Step 6: Final answer
    x = 428,809.06

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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.