Home / 918,888.12-1,268,080.56-505,441.20

Finding the Fourth Proportional to 918,888.12, 1,268,080.56 and 505,441.20

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Solution

The fourth proportional to 918,888.12, 1,268,080.56 and 505,441.20 is: 697,517.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,888.12 : 1,268,080.56 = 505,441.20 : x
  2. Step 2: Convert to fraction form
    918,888.12/1,268,080.56 = 505,441.20/x
  3. Step 3: Cross multiply
    918,888.12x = 1,268,080.56 × 505,441.20
  4. Step 4: Simplify right side
    918,888.12x = 640,940,159,943.07
  5. Step 5: Solve for x
    x = 640,940,159,943.07/918,888.12
  6. Step 6: Final answer
    x = 697,517.08

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Double scale
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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.