Home / 656,222.21-905,586.78-354,416.21

Finding the Fourth Proportional to 656,222.21, 905,586.78 and 354,416.21

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Solution

The fourth proportional to 656,222.21, 905,586.78 and 354,416.21 is: 489,094.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,222.21 : 905,586.78 = 354,416.21 : x
  2. Step 2: Convert to fraction form
    656,222.21/905,586.78 = 354,416.21/x
  3. Step 3: Cross multiply
    656,222.21x = 905,586.78 × 354,416.21
  4. Step 4: Simplify right side
    656,222.21x = 320,954,634,590.78
  5. Step 5: Solve for x
    x = 320,954,634,590.78/656,222.21
  6. Step 6: Final answer
    x = 489,094.44

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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.