Home / 679,261.70-1,018,892.55-621,200.90

Finding the Fourth Proportional to 679,261.70, 1,018,892.55 and 621,200.90

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Solution

The fourth proportional to 679,261.70, 1,018,892.55 and 621,200.90 is: 931,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,261.70 : 1,018,892.55 = 621,200.90 : x
  2. Step 2: Convert to fraction form
    679,261.70/1,018,892.55 = 621,200.90/x
  3. Step 3: Cross multiply
    679,261.70x = 1,018,892.55 × 621,200.90
  4. Step 4: Simplify right side
    679,261.70x = 632,936,969,063.30
  5. Step 5: Solve for x
    x = 632,936,969,063.30/679,261.70
  6. Step 6: Final answer
    x = 931,801.35

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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.