Home / 728,047,952.56-1,004,710,608.75-393,519,627.30

Finding the Fourth Proportional to 728,047,952.56, 1,004,710,608.75 and 393,519,627.30

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Solution

The fourth proportional to 728,047,952.56, 1,004,710,608.75 and 393,519,627.30 is: 543,059,482.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,047,952.56 : 1,004,710,608.75 = 393,519,627.30 : x
  2. Step 2: Convert to fraction form
    728,047,952.56/1,004,710,608.75 = 393,519,627.30/x
  3. Step 3: Cross multiply
    728,047,952.56x = 1,004,710,608.75 × 393,519,627.30
  4. Step 4: Simplify right side
    728,047,952.56x = 395,373,344,299,656,128
  5. Step 5: Solve for x
    x = 395,373,344,299,656,128/728,047,952.56
  6. Step 6: Final answer
    x = 543,059,482.43

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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.