Home / 656,127.20-905,455.53-354,321.20

Finding the Fourth Proportional to 656,127.20, 905,455.53 and 354,321.20

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Solution

The fourth proportional to 656,127.20, 905,455.53 and 354,321.20 is: 488,963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,127.20 : 905,455.53 = 354,321.20 : x
  2. Step 2: Convert to fraction form
    656,127.20/905,455.53 = 354,321.20/x
  3. Step 3: Cross multiply
    656,127.20x = 905,455.53 × 354,321.20
  4. Step 4: Simplify right side
    656,127.20x = 320,822,085,408.96
  5. Step 5: Solve for x
    x = 320,822,085,408.96/656,127.20
  6. Step 6: Final answer
    x = 488,963.25

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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.