Home / 438,719,464.38-605,079,840.78-385,682,771.74

Finding the Fourth Proportional to 438,719,464.38, 605,079,840.78 and 385,682,771.74

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Solution

The fourth proportional to 438,719,464.38, 605,079,840.78 and 385,682,771.74 is: 531,931,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,719,464.38 : 605,079,840.78 = 385,682,771.74 : x
  2. Step 2: Convert to fraction form
    438,719,464.38/605,079,840.78 = 385,682,771.74/x
  3. Step 3: Cross multiply
    438,719,464.38x = 605,079,840.78 × 385,682,771.74
  4. Step 4: Simplify right side
    438,719,464.38x = 233,368,870,116,028,288
  5. Step 5: Solve for x
    x = 233,368,870,116,028,288/438,719,464.38
  6. Step 6: Final answer
    x = 531,931,881.45

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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.