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Finding the Fourth Proportional to 540,010.40, 810,015.60 and 491,021.60

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Solution

The fourth proportional to 540,010.40, 810,015.60 and 491,021.60 is: 736,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,010.40 : 810,015.60 = 491,021.60 : x
  2. Step 2: Convert to fraction form
    540,010.40/810,015.60 = 491,021.60/x
  3. Step 3: Cross multiply
    540,010.40x = 810,015.60 × 491,021.60
  4. Step 4: Simplify right side
    540,010.40x = 397,735,155,936.96
  5. Step 5: Solve for x
    x = 397,735,155,936.96/540,010.40
  6. Step 6: Final answer
    x = 736,532.40

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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.