Home / 889,739.40-1,334,738.70-290,728.20

Finding the Fourth Proportional to 889,739.40, 1,334,738.70 and 290,728.20

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Solution

The fourth proportional to 889,739.40, 1,334,738.70 and 290,728.20 is: 436,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,739.40 : 1,334,738.70 = 290,728.20 : x
  2. Step 2: Convert to fraction form
    889,739.40/1,334,738.70 = 290,728.20/x
  3. Step 3: Cross multiply
    889,739.40x = 1,334,738.70 × 290,728.20
  4. Step 4: Simplify right side
    889,739.40x = 388,046,179,721.34
  5. Step 5: Solve for x
    x = 388,046,179,721.34/889,739.40
  6. Step 6: Final answer
    x = 436,134.65

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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.