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Finding the Fourth Proportional to 540,086.40, 810,129.60 and 456,105.60

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Solution

The fourth proportional to 540,086.40, 810,129.60 and 456,105.60 is: 684,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,086.40 : 810,129.60 = 456,105.60 : x
  2. Step 2: Convert to fraction form
    540,086.40/810,129.60 = 456,105.60/x
  3. Step 3: Cross multiply
    540,086.40x = 810,129.60 × 456,105.60
  4. Step 4: Simplify right side
    540,086.40x = 369,504,647,285.76
  5. Step 5: Solve for x
    x = 369,504,647,285.76/540,086.40
  6. Step 6: Final answer
    x = 684,158.40

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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.