Home / 1,131,125-1,560,962.10-621,816.20

Finding the Fourth Proportional to 1,131,125, 1,560,962.10 and 621,816.20

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Solution

The fourth proportional to 1,131,125, 1,560,962.10 and 621,816.20 is: 858,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,125 : 1,560,962.10 = 621,816.20 : x
  2. Step 2: Convert to fraction form
    1,131,125/1,560,962.10 = 621,816.20/x
  3. Step 3: Cross multiply
    1,131,125x = 1,560,962.10 × 621,816.20
  4. Step 4: Simplify right side
    1,131,125x = 970,631,521,366.02
  5. Step 5: Solve for x
    x = 970,631,521,366.02/1,131,125
  6. Step 6: Final answer
    x = 858,111.63

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Half scale
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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.