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Finding the Fourth Proportional to 500,768.58, 691,038.09 and 274,409.22

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Solution

The fourth proportional to 500,768.58, 691,038.09 and 274,409.22 is: 378,672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,768.58 : 691,038.09 = 274,409.22 : x
  2. Step 2: Convert to fraction form
    500,768.58/691,038.09 = 274,409.22/x
  3. Step 3: Cross multiply
    500,768.58x = 691,038.09 × 274,409.22
  4. Step 4: Simplify right side
    500,768.58x = 189,627,223,267.19
  5. Step 5: Solve for x
    x = 189,627,223,267.19/500,768.58
  6. Step 6: Final answer
    x = 378,672.37

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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.