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Finding the Fourth Proportional to 554,848,798.80, 765,685,240.19 and 300,523,828.20

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Solution

The fourth proportional to 554,848,798.80, 765,685,240.19 and 300,523,828.20 is: 414,719,577.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,848,798.80 : 765,685,240.19 = 300,523,828.20 : x
  2. Step 2: Convert to fraction form
    554,848,798.80/765,685,240.19 = 300,523,828.20/x
  3. Step 3: Cross multiply
    554,848,798.80x = 765,685,240.19 × 300,523,828.20
  4. Step 4: Simplify right side
    554,848,798.80x = 230,106,659,576,632,640
  5. Step 5: Solve for x
    x = 230,106,659,576,632,640/554,848,798.80
  6. Step 6: Final answer
    x = 414,719,577.79

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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.