Home / 620,445.48-928,915.38-505,914.36

Finding the Fourth Proportional to 620,445.48, 928,915.38 and 505,914.36

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Solution

The fourth proportional to 620,445.48, 928,915.38 and 505,914.36 is: 757,442.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,445.48 : 928,915.38 = 505,914.36 : x
  2. Step 2: Convert to fraction form
    620,445.48/928,915.38 = 505,914.36/x
  3. Step 3: Cross multiply
    620,445.48x = 928,915.38 × 505,914.36
  4. Step 4: Simplify right side
    620,445.48x = 469,951,629,966.86
  5. Step 5: Solve for x
    x = 469,951,629,966.86/620,445.48
  6. Step 6: Final answer
    x = 757,442.27

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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.