Home / 612,738.20-917,795.10-494,640.20

Finding the Fourth Proportional to 612,738.20, 917,795.10 and 494,640.20

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Solution

The fourth proportional to 612,738.20, 917,795.10 and 494,640.20 is: 740,901.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,738.20 : 917,795.10 = 494,640.20 : x
  2. Step 2: Convert to fraction form
    612,738.20/917,795.10 = 494,640.20/x
  3. Step 3: Cross multiply
    612,738.20x = 917,795.10 × 494,640.20
  4. Step 4: Simplify right side
    612,738.20x = 453,978,351,823.02
  5. Step 5: Solve for x
    x = 453,978,351,823.02/612,738.20
  6. Step 6: Final answer
    x = 740,901.01

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Double scale
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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.