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Finding the Fourth Proportional to 554,967.89, 765,856.36 and 300,319.08

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Solution

The fourth proportional to 554,967.89, 765,856.36 and 300,319.08 is: 414,440.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,967.89 : 765,856.36 = 300,319.08 : x
  2. Step 2: Convert to fraction form
    554,967.89/765,856.36 = 300,319.08/x
  3. Step 3: Cross multiply
    554,967.89x = 765,856.36 × 300,319.08
  4. Step 4: Simplify right side
    554,967.89x = 230,001,277,447.35
  5. Step 5: Solve for x
    x = 230,001,277,447.35/554,967.89
  6. Step 6: Final answer
    x = 414,440.69

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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.