Home / 455,931.20-685,063.20-404,609.60

Finding the Fourth Proportional to 455,931.20, 685,063.20 and 404,609.60

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Solution

The fourth proportional to 455,931.20, 685,063.20 and 404,609.60 is: 607,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,931.20 : 685,063.20 = 404,609.60 : x
  2. Step 2: Convert to fraction form
    455,931.20/685,063.20 = 404,609.60/x
  3. Step 3: Cross multiply
    455,931.20x = 685,063.20 × 404,609.60
  4. Step 4: Simplify right side
    455,931.20x = 277,183,147,326.72
  5. Step 5: Solve for x
    x = 277,183,147,326.72/455,931.20
  6. Step 6: Final answer
    x = 607,949.50

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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.