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Finding the Fourth Proportional to 513,878.80, 770,818.20 and 475,387.60

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Solution

The fourth proportional to 513,878.80, 770,818.20 and 475,387.60 is: 713,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,878.80 : 770,818.20 = 475,387.60 : x
  2. Step 2: Convert to fraction form
    513,878.80/770,818.20 = 475,387.60/x
  3. Step 3: Cross multiply
    513,878.80x = 770,818.20 × 475,387.60
  4. Step 4: Simplify right side
    513,878.80x = 366,437,414,134.32
  5. Step 5: Solve for x
    x = 366,437,414,134.32/513,878.80
  6. Step 6: Final answer
    x = 713,081.40

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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.