Home / 520,129,796.97-780,075,306.63-310,099,912.41

Finding the Fourth Proportional to 520,129,796.97, 780,075,306.63 and 310,099,912.41

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Solution

The fourth proportional to 520,129,796.97, 780,075,306.63 and 310,099,912.41 is: 465,078,689.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,129,796.97 : 780,075,306.63 = 310,099,912.41 : x
  2. Step 2: Convert to fraction form
    520,129,796.97/780,075,306.63 = 310,099,912.41/x
  3. Step 3: Cross multiply
    520,129,796.97x = 780,075,306.63 × 310,099,912.41
  4. Step 4: Simplify right side
    520,129,796.97x = 241,901,284,259,166,912
  5. Step 5: Solve for x
    x = 241,901,284,259,166,912/520,129,796.97
  6. Step 6: Final answer
    x = 465,078,689.34

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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.