Home / 864,642.90-1,297,755.39-438,472.86

Finding the Fourth Proportional to 864,642.90, 1,297,755.39 and 438,472.86

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Solution

The fourth proportional to 864,642.90, 1,297,755.39 and 438,472.86 is: 658,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,642.90 : 1,297,755.39 = 438,472.86 : x
  2. Step 2: Convert to fraction form
    864,642.90/1,297,755.39 = 438,472.86/x
  3. Step 3: Cross multiply
    864,642.90x = 1,297,755.39 × 438,472.86
  4. Step 4: Simplify right side
    864,642.90x = 569,030,517,433.72
  5. Step 5: Solve for x
    x = 569,030,517,433.72/864,642.90
  6. Step 6: Final answer
    x = 658,110.44

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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.