Home / 628,615.02-867,096.99-383,487.78

Finding the Fourth Proportional to 628,615.02, 867,096.99 and 383,487.78

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Solution

The fourth proportional to 628,615.02, 867,096.99 and 383,487.78 is: 528,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,615.02 : 867,096.99 = 383,487.78 : x
  2. Step 2: Convert to fraction form
    628,615.02/867,096.99 = 383,487.78/x
  3. Step 3: Cross multiply
    628,615.02x = 867,096.99 × 383,487.78
  4. Step 4: Simplify right side
    628,615.02x = 332,521,099,739.78
  5. Step 5: Solve for x
    x = 332,521,099,739.78/628,615.02
  6. Step 6: Final answer
    x = 528,974.16

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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.