Home / 641,850.06-961,200.44-430,848.30

Finding the Fourth Proportional to 641,850.06, 961,200.44 and 430,848.30

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Solution

The fourth proportional to 641,850.06, 961,200.44 and 430,848.30 is: 645,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,850.06 : 961,200.44 = 430,848.30 : x
  2. Step 2: Convert to fraction form
    641,850.06/961,200.44 = 430,848.30/x
  3. Step 3: Cross multiply
    641,850.06x = 961,200.44 × 430,848.30
  4. Step 4: Simplify right side
    641,850.06x = 414,131,575,533.25
  5. Step 5: Solve for x
    x = 414,131,575,533.25/641,850.06
  6. Step 6: Final answer
    x = 645,215.45

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