Home / 665,554.20-998,331.30-455,602.20

Finding the Fourth Proportional to 665,554.20, 998,331.30 and 455,602.20

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Solution

The fourth proportional to 665,554.20, 998,331.30 and 455,602.20 is: 683,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,554.20 : 998,331.30 = 455,602.20 : x
  2. Step 2: Convert to fraction form
    665,554.20/998,331.30 = 455,602.20/x
  3. Step 3: Cross multiply
    665,554.20x = 998,331.30 × 455,602.20
  4. Step 4: Simplify right side
    665,554.20x = 454,841,936,608.86
  5. Step 5: Solve for x
    x = 454,841,936,608.86/665,554.20
  6. Step 6: Final answer
    x = 683,403.30

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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.