Home / 678,609.30-936,844.40-523,221.19

Finding the Fourth Proportional to 678,609.30, 936,844.40 and 523,221.19

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Solution

The fourth proportional to 678,609.30, 936,844.40 and 523,221.19 is: 722,325.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,609.30 : 936,844.40 = 523,221.19 : x
  2. Step 2: Convert to fraction form
    678,609.30/936,844.40 = 523,221.19/x
  3. Step 3: Cross multiply
    678,609.30x = 936,844.40 × 523,221.19
  4. Step 4: Simplify right side
    678,609.30x = 490,176,841,812.84
  5. Step 5: Solve for x
    x = 490,176,841,812.84/678,609.30
  6. Step 6: Final answer
    x = 722,325.56

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Half scale
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Double scale
Find fourth proportional to 678,610.30, 936,845.78 and 523,222.19
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.