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Finding the Fourth Proportional to 646,427.56, 892,061.54 and 356,033.56

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Solution

The fourth proportional to 646,427.56, 892,061.54 and 356,033.56 is: 491,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,427.56 : 892,061.54 = 356,033.56 : x
  2. Step 2: Convert to fraction form
    646,427.56/892,061.54 = 356,033.56/x
  3. Step 3: Cross multiply
    646,427.56x = 892,061.54 × 356,033.56
  4. Step 4: Simplify right side
    646,427.56x = 317,603,845,825.28
  5. Step 5: Solve for x
    x = 317,603,845,825.28/646,427.56
  6. Step 6: Final answer
    x = 491,321.64

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1.5x scale

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.