Home / 890,679.38-1,229,137.54-488,271.38

Finding the Fourth Proportional to 890,679.38, 1,229,137.54 and 488,271.38

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Solution

The fourth proportional to 890,679.38, 1,229,137.54 and 488,271.38 is: 673,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,679.38 : 1,229,137.54 = 488,271.38 : x
  2. Step 2: Convert to fraction form
    890,679.38/1,229,137.54 = 488,271.38/x
  3. Step 3: Cross multiply
    890,679.38x = 1,229,137.54 × 488,271.38
  4. Step 4: Simplify right side
    890,679.38x = 600,152,675,499.24
  5. Step 5: Solve for x
    x = 600,152,675,499.24/890,679.38
  6. Step 6: Final answer
    x = 673,814.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.