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Finding the Fourth Proportional to 880,081.32, 1,319,910.54 and 406,311.54

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Solution

The fourth proportional to 880,081.32, 1,319,910.54 and 406,311.54 is: 609,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,081.32 : 1,319,910.54 = 406,311.54 : x
  2. Step 2: Convert to fraction form
    880,081.32/1,319,910.54 = 406,311.54/x
  3. Step 3: Cross multiply
    880,081.32x = 1,319,910.54 × 406,311.54
  4. Step 4: Simplify right side
    880,081.32x = 536,294,884,169.63
  5. Step 5: Solve for x
    x = 536,294,884,169.63/880,081.32
  6. Step 6: Final answer
    x = 609,369.69

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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.