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Finding the Fourth Proportional to 540,087.40, 810,131.10 and 513,843.40

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Solution

The fourth proportional to 540,087.40, 810,131.10 and 513,843.40 is: 770,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,087.40 : 810,131.10 = 513,843.40 : x
  2. Step 2: Convert to fraction form
    540,087.40/810,131.10 = 513,843.40/x
  3. Step 3: Cross multiply
    540,087.40x = 810,131.10 × 513,843.40
  4. Step 4: Simplify right side
    540,087.40x = 416,280,518,869.74
  5. Step 5: Solve for x
    x = 416,280,518,869.74/540,087.40
  6. Step 6: Final answer
    x = 770,765.10

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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.