Home / 770,135.20-1,155,181.20-349,410.40

Finding the Fourth Proportional to 770,135.20, 1,155,181.20 and 349,410.40

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Solution

The fourth proportional to 770,135.20, 1,155,181.20 and 349,410.40 is: 524,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,135.20 : 1,155,181.20 = 349,410.40 : x
  2. Step 2: Convert to fraction form
    770,135.20/1,155,181.20 = 349,410.40/x
  3. Step 3: Cross multiply
    770,135.20x = 1,155,181.20 × 349,410.40
  4. Step 4: Simplify right side
    770,135.20x = 403,632,325,164.48
  5. Step 5: Solve for x
    x = 403,632,325,164.48/770,135.20
  6. Step 6: Final answer
    x = 524,105.80

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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.