Home / 528,278.66-792,542.37-420,615.23

Finding the Fourth Proportional to 528,278.66, 792,542.37 and 420,615.23

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Solution

The fourth proportional to 528,278.66, 792,542.37 and 420,615.23 is: 631,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,278.66 : 792,542.37 = 420,615.23 : x
  2. Step 2: Convert to fraction form
    528,278.66/792,542.37 = 420,615.23/x
  3. Step 3: Cross multiply
    528,278.66x = 792,542.37 × 420,615.23
  4. Step 4: Simplify right side
    528,278.66x = 333,355,393,314.94
  5. Step 5: Solve for x
    x = 333,355,393,314.94/528,278.66
  6. Step 6: Final answer
    x = 631,021.88

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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.