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Finding the Fourth Proportional to 397,403.88, 549,861.46 and 346,522.70

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Solution

The fourth proportional to 397,403.88, 549,861.46 and 346,522.70 is: 479,460.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,403.88 : 549,861.46 = 346,522.70 : x
  2. Step 2: Convert to fraction form
    397,403.88/549,861.46 = 346,522.70/x
  3. Step 3: Cross multiply
    397,403.88x = 549,861.46 × 346,522.70
  4. Step 4: Simplify right side
    397,403.88x = 190,539,477,745.14
  5. Step 5: Solve for x
    x = 190,539,477,745.14/397,403.88
  6. Step 6: Final answer
    x = 479,460.54

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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.