Home / 679,408.20-1,019,112.30-455,459.40

Finding the Fourth Proportional to 679,408.20, 1,019,112.30 and 455,459.40

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Solution

The fourth proportional to 679,408.20, 1,019,112.30 and 455,459.40 is: 683,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,408.20 : 1,019,112.30 = 455,459.40 : x
  2. Step 2: Convert to fraction form
    679,408.20/1,019,112.30 = 455,459.40/x
  3. Step 3: Cross multiply
    679,408.20x = 1,019,112.30 × 455,459.40
  4. Step 4: Simplify right side
    679,408.20x = 464,164,276,690.62
  5. Step 5: Solve for x
    x = 464,164,276,690.62/679,408.20
  6. Step 6: Final answer
    x = 683,189.10

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Double scale
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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.