Home / 638,681,891.96-958,184,648.46-196,047,012.80

Finding the Fourth Proportional to 638,681,891.96, 958,184,648.46 and 196,047,012.80

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Solution

The fourth proportional to 638,681,891.96, 958,184,648.46 and 196,047,012.80 is: 294,120,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,681,891.96 : 958,184,648.46 = 196,047,012.80 : x
  2. Step 2: Convert to fraction form
    638,681,891.96/958,184,648.46 = 196,047,012.80/x
  3. Step 3: Cross multiply
    638,681,891.96x = 958,184,648.46 × 196,047,012.80
  4. Step 4: Simplify right side
    638,681,891.96x = 187,849,238,041,401,152
  5. Step 5: Solve for x
    x = 187,849,238,041,401,152/638,681,891.96
  6. Step 6: Final answer
    x = 294,120,187.85

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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.