Home / 438,719,459.38-605,079,833.88-385,682,766.73

Finding the Fourth Proportional to 438,719,459.38, 605,079,833.88 and 385,682,766.73

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Solution

The fourth proportional to 438,719,459.38, 605,079,833.88 and 385,682,766.73 is: 531,931,874.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,719,459.38 : 605,079,833.88 = 385,682,766.73 : x
  2. Step 2: Convert to fraction form
    438,719,459.38/605,079,833.88 = 385,682,766.73/x
  3. Step 3: Cross multiply
    438,719,459.38x = 605,079,833.88 × 385,682,766.73
  4. Step 4: Simplify right side
    438,719,459.38x = 233,368,864,423,367,200
  5. Step 5: Solve for x
    x = 233,368,864,423,367,200/438,719,459.38
  6. Step 6: Final answer
    x = 531,931,874.54

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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.