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Finding the Fourth Proportional to 675,640.26, 931,247.23 and 512,242.66

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Solution

The fourth proportional to 675,640.26, 931,247.23 and 512,242.66 is: 706,033.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,640.26 : 931,247.23 = 512,242.66 : x
  2. Step 2: Convert to fraction form
    675,640.26/931,247.23 = 512,242.66/x
  3. Step 3: Cross multiply
    675,640.26x = 931,247.23 × 512,242.66
  4. Step 4: Simplify right side
    675,640.26x = 477,024,555,111.86
  5. Step 5: Solve for x
    x = 477,024,555,111.86/675,640.26
  6. Step 6: Final answer
    x = 706,033.35

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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.