Home / 485,115,907.20-727,673,860.80-266,681,846.40

Finding the Fourth Proportional to 485,115,907.20, 727,673,860.80 and 266,681,846.40

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Solution

The fourth proportional to 485,115,907.20, 727,673,860.80 and 266,681,846.40 is: 400,022,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,115,907.20 : 727,673,860.80 = 266,681,846.40 : x
  2. Step 2: Convert to fraction form
    485,115,907.20/727,673,860.80 = 266,681,846.40/x
  3. Step 3: Cross multiply
    485,115,907.20x = 727,673,860.80 × 266,681,846.40
  4. Step 4: Simplify right side
    485,115,907.20x = 194,057,408,775,160,576
  5. Step 5: Solve for x
    x = 194,057,408,775,160,576/485,115,907.20
  6. Step 6: Final answer
    x = 400,022,769.60

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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.