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Finding the Fourth Proportional to 488,416.80, 732,625.20 and 440,205.60

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Solution

The fourth proportional to 488,416.80, 732,625.20 and 440,205.60 is: 660,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,416.80 : 732,625.20 = 440,205.60 : x
  2. Step 2: Convert to fraction form
    488,416.80/732,625.20 = 440,205.60/x
  3. Step 3: Cross multiply
    488,416.80x = 732,625.20 × 440,205.60
  4. Step 4: Simplify right side
    488,416.80x = 322,505,715,741.12
  5. Step 5: Solve for x
    x = 322,505,715,741.12/488,416.80
  6. Step 6: Final answer
    x = 660,308.40

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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.