Home / 678,606.19-936,840.12-523,218.10

Finding the Fourth Proportional to 678,606.19, 936,840.12 and 523,218.10

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Solution

The fourth proportional to 678,606.19, 936,840.12 and 523,218.10 is: 722,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,606.19 : 936,840.12 = 523,218.10 : x
  2. Step 2: Convert to fraction form
    678,606.19/936,840.12 = 523,218.10/x
  3. Step 3: Cross multiply
    678,606.19x = 936,840.12 × 523,218.10
  4. Step 4: Simplify right side
    678,606.19x = 490,171,707,590.17
  5. Step 5: Solve for x
    x = 490,171,707,590.17/678,606.19
  6. Step 6: Final answer
    x = 722,321.30

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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.