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Finding the Fourth Proportional to 545,976.40, 818,964.60 and 496,987.60

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Solution

The fourth proportional to 545,976.40, 818,964.60 and 496,987.60 is: 745,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,976.40 : 818,964.60 = 496,987.60 : x
  2. Step 2: Convert to fraction form
    545,976.40/818,964.60 = 496,987.60/x
  3. Step 3: Cross multiply
    545,976.40x = 818,964.60 × 496,987.60
  4. Step 4: Simplify right side
    545,976.40x = 407,015,251,038.96
  5. Step 5: Solve for x
    x = 407,015,251,038.96/545,976.40
  6. Step 6: Final answer
    x = 745,481.40

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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.