Home / 928,170.40-1,392,256.79-254,257.63

Finding the Fourth Proportional to 928,170.40, 1,392,256.79 and 254,257.63

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Solution

The fourth proportional to 928,170.40, 1,392,256.79 and 254,257.63 is: 381,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,170.40 : 1,392,256.79 = 254,257.63 : x
  2. Step 2: Convert to fraction form
    928,170.40/1,392,256.79 = 254,257.63/x
  3. Step 3: Cross multiply
    928,170.40x = 1,392,256.79 × 254,257.63
  4. Step 4: Simplify right side
    928,170.40x = 353,991,911,776.81
  5. Step 5: Solve for x
    x = 353,991,911,776.81/928,170.40
  6. Step 6: Final answer
    x = 381,386.77

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Double scale
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Similar ratio
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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.