Home / 420,928.99-580,697.47-257,593.37

Finding the Fourth Proportional to 420,928.99, 580,697.47 and 257,593.37

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Solution

The fourth proportional to 420,928.99, 580,697.47 and 257,593.37 is: 355,365.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,928.99 : 580,697.47 = 257,593.37 : x
  2. Step 2: Convert to fraction form
    420,928.99/580,697.47 = 257,593.37/x
  3. Step 3: Cross multiply
    420,928.99x = 580,697.47 × 257,593.37
  4. Step 4: Simplify right side
    420,928.99x = 149,583,815,666.28
  5. Step 5: Solve for x
    x = 149,583,815,666.28/420,928.99
  6. Step 6: Final answer
    x = 355,365.92

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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.