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Finding the Fourth Proportional to 554,970.59, 765,859.41 and 300,321.78

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Solution

The fourth proportional to 554,970.59, 765,859.41 and 300,321.78 is: 414,444.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,970.59 : 765,859.41 = 300,321.78 : x
  2. Step 2: Convert to fraction form
    554,970.59/765,859.41 = 300,321.78/x
  3. Step 3: Cross multiply
    554,970.59x = 765,859.41 × 300,321.78
  4. Step 4: Simplify right side
    554,970.59x = 230,004,258,368.98
  5. Step 5: Solve for x
    x = 230,004,258,368.98/554,970.59
  6. Step 6: Final answer
    x = 414,444.05

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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.