Home / 434,571.20-651,638.10-257,132.60

Finding the Fourth Proportional to 434,571.20, 651,638.10 and 257,132.60

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Solution

The fourth proportional to 434,571.20, 651,638.10 and 257,132.60 is: 385,569.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,571.20 : 651,638.10 = 257,132.60 : x
  2. Step 2: Convert to fraction form
    434,571.20/651,638.10 = 257,132.60/x
  3. Step 3: Cross multiply
    434,571.20x = 651,638.10 × 257,132.60
  4. Step 4: Simplify right side
    434,571.20x = 167,557,398,912.06
  5. Step 5: Solve for x
    x = 167,557,398,912.06/434,571.20
  6. Step 6: Final answer
    x = 385,569.50

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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.