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Finding the Fourth Proportional to 458,793.60, 686,829.60 and 340,987.20

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Solution

The fourth proportional to 458,793.60, 686,829.60 and 340,987.20 is: 510,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,793.60 : 686,829.60 = 340,987.20 : x
  2. Step 2: Convert to fraction form
    458,793.60/686,829.60 = 340,987.20/x
  3. Step 3: Cross multiply
    458,793.60x = 686,829.60 × 340,987.20
  4. Step 4: Simplify right side
    458,793.60x = 234,200,102,181.12
  5. Step 5: Solve for x
    x = 234,200,102,181.12/458,793.60
  6. Step 6: Final answer
    x = 510,469.42

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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.