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Finding the Fourth Proportional to 663,129.90, 993,679.60 and 446,185.07

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Solution

The fourth proportional to 663,129.90, 993,679.60 and 446,185.07 is: 668,594.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,129.90 : 993,679.60 = 446,185.07 : x
  2. Step 2: Convert to fraction form
    663,129.90/993,679.60 = 446,185.07/x
  3. Step 3: Cross multiply
    663,129.90x = 993,679.60 × 446,185.07
  4. Step 4: Simplify right side
    663,129.90x = 443,364,999,399.37
  5. Step 5: Solve for x
    x = 443,364,999,399.37/663,129.90
  6. Step 6: Final answer
    x = 668,594.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.