Home / 1,028,743.20-1,419,336-666,446.40

Finding the Fourth Proportional to 1,028,743.20, 1,419,336 and 666,446.40

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Solution

The fourth proportional to 1,028,743.20, 1,419,336 and 666,446.40 is: 919,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,743.20 : 1,419,336 = 666,446.40 : x
  2. Step 2: Convert to fraction form
    1,028,743.20/1,419,336 = 666,446.40/x
  3. Step 3: Cross multiply
    1,028,743.20x = 1,419,336 × 666,446.40
  4. Step 4: Simplify right side
    1,028,743.20x = 945,911,367,590.40
  5. Step 5: Solve for x
    x = 945,911,367,590.40/1,028,743.20
  6. Step 6: Final answer
    x = 919,482.50

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Double scale
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Similar ratio
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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.