Home / 387,331.20-579,441.60-335,318.40

Finding the Fourth Proportional to 387,331.20, 579,441.60 and 335,318.40

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Solution

The fourth proportional to 387,331.20, 579,441.60 and 335,318.40 is: 501,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,331.20 : 579,441.60 = 335,318.40 : x
  2. Step 2: Convert to fraction form
    387,331.20/579,441.60 = 335,318.40/x
  3. Step 3: Cross multiply
    387,331.20x = 579,441.60 × 335,318.40
  4. Step 4: Simplify right side
    387,331.20x = 194,297,430,205.44
  5. Step 5: Solve for x
    x = 194,297,430,205.44/387,331.20
  6. Step 6: Final answer
    x = 501,631.24

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1.5x scale

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.