Home / 1,261,505.85-1,892,560.10-420,064.89

Finding the Fourth Proportional to 1,261,505.85, 1,892,560.10 and 420,064.89

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Solution

The fourth proportional to 1,261,505.85, 1,892,560.10 and 420,064.89 is: 630,197.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,505.85 : 1,892,560.10 = 420,064.89 : x
  2. Step 2: Convert to fraction form
    1,261,505.85/1,892,560.10 = 420,064.89/x
  3. Step 3: Cross multiply
    1,261,505.85x = 1,892,560.10 × 420,064.89
  4. Step 4: Simplify right side
    1,261,505.85x = 794,998,050,224.89
  5. Step 5: Solve for x
    x = 794,998,050,224.89/1,261,505.85
  6. Step 6: Final answer
    x = 630,197.67

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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.