Home / 513,847.40-770,771.10-492,852.20

Finding the Fourth Proportional to 513,847.40, 770,771.10 and 492,852.20

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Solution

The fourth proportional to 513,847.40, 770,771.10 and 492,852.20 is: 739,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,847.40 : 770,771.10 = 492,852.20 : x
  2. Step 2: Convert to fraction form
    513,847.40/770,771.10 = 492,852.20/x
  3. Step 3: Cross multiply
    513,847.40x = 770,771.10 × 492,852.20
  4. Step 4: Simplify right side
    513,847.40x = 379,876,232,331.42
  5. Step 5: Solve for x
    x = 379,876,232,331.42/513,847.40
  6. Step 6: Final answer
    x = 739,278.30

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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.