Home / 851,348.10-1,276,985.25-211,638.45

Finding the Fourth Proportional to 851,348.10, 1,276,985.25 and 211,638.45

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Solution

The fourth proportional to 851,348.10, 1,276,985.25 and 211,638.45 is: 317,448.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,348.10 : 1,276,985.25 = 211,638.45 : x
  2. Step 2: Convert to fraction form
    851,348.10/1,276,985.25 = 211,638.45/x
  3. Step 3: Cross multiply
    851,348.10x = 1,276,985.25 × 211,638.45
  4. Step 4: Simplify right side
    851,348.10x = 270,259,183,771.56
  5. Step 5: Solve for x
    x = 270,259,183,771.56/851,348.10
  6. Step 6: Final answer
    x = 317,448.51

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Double scale
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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.