Home / 827,562.30-1,241,343.45-428,325.45

Finding the Fourth Proportional to 827,562.30, 1,241,343.45 and 428,325.45

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Solution

The fourth proportional to 827,562.30, 1,241,343.45 and 428,325.45 is: 642,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,562.30 : 1,241,343.45 = 428,325.45 : x
  2. Step 2: Convert to fraction form
    827,562.30/1,241,343.45 = 428,325.45/x
  3. Step 3: Cross multiply
    827,562.30x = 1,241,343.45 × 428,325.45
  4. Step 4: Simplify right side
    827,562.30x = 531,698,991,825.80
  5. Step 5: Solve for x
    x = 531,698,991,825.80/827,562.30
  6. Step 6: Final answer
    x = 642,488.18

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.