Home / 420,355.93-579,939.60-323,589.38

Finding the Fourth Proportional to 420,355.93, 579,939.60 and 323,589.38

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Solution

The fourth proportional to 420,355.93, 579,939.60 and 323,589.38 is: 446,436.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,355.93 : 579,939.60 = 323,589.38 : x
  2. Step 2: Convert to fraction form
    420,355.93/579,939.60 = 323,589.38/x
  3. Step 3: Cross multiply
    420,355.93x = 579,939.60 × 323,589.38
  4. Step 4: Simplify right side
    420,355.93x = 187,662,295,357.18
  5. Step 5: Solve for x
    x = 187,662,295,357.18/420,355.93
  6. Step 6: Final answer
    x = 446,436.66

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1.5x scale

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.