Home / 628,968.78-942,665.54-495,321.21

Finding the Fourth Proportional to 628,968.78, 942,665.54 and 495,321.21

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Solution

The fourth proportional to 628,968.78, 942,665.54 and 495,321.21 is: 742,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,968.78 : 942,665.54 = 495,321.21 : x
  2. Step 2: Convert to fraction form
    628,968.78/942,665.54 = 495,321.21/x
  3. Step 3: Cross multiply
    628,968.78x = 942,665.54 × 495,321.21
  4. Step 4: Simplify right side
    628,968.78x = 466,922,233,421.50
  5. Step 5: Solve for x
    x = 466,922,233,421.50/628,968.78
  6. Step 6: Final answer
    x = 742,361.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.