Home / 910,091.40-1,365,137.10-278,923.20

Finding the Fourth Proportional to 910,091.40, 1,365,137.10 and 278,923.20

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Solution

The fourth proportional to 910,091.40, 1,365,137.10 and 278,923.20 is: 418,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,091.40 : 1,365,137.10 = 278,923.20 : x
  2. Step 2: Convert to fraction form
    910,091.40/1,365,137.10 = 278,923.20/x
  3. Step 3: Cross multiply
    910,091.40x = 1,365,137.10 × 278,923.20
  4. Step 4: Simplify right side
    910,091.40x = 380,768,408,370.72
  5. Step 5: Solve for x
    x = 380,768,408,370.72/910,091.40
  6. Step 6: Final answer
    x = 418,384.80

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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.