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Finding the Fourth Proportional to 448,081.60, 672,122.40 and 406,609.60

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Solution

The fourth proportional to 448,081.60, 672,122.40 and 406,609.60 is: 609,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,081.60 : 672,122.40 = 406,609.60 : x
  2. Step 2: Convert to fraction form
    448,081.60/672,122.40 = 406,609.60/x
  3. Step 3: Cross multiply
    448,081.60x = 672,122.40 × 406,609.60
  4. Step 4: Simplify right side
    448,081.60x = 273,291,420,215.04
  5. Step 5: Solve for x
    x = 273,291,420,215.04/448,081.60
  6. Step 6: Final answer
    x = 609,914.40

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Similar ratio
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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.