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Finding the Fourth Proportional to 528,852.80, 793,279.20 and 505,816.40

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Solution

The fourth proportional to 528,852.80, 793,279.20 and 505,816.40 is: 758,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,852.80 : 793,279.20 = 505,816.40 : x
  2. Step 2: Convert to fraction form
    528,852.80/793,279.20 = 505,816.40/x
  3. Step 3: Cross multiply
    528,852.80x = 793,279.20 × 505,816.40
  4. Step 4: Simplify right side
    528,852.80x = 401,253,629,138.88
  5. Step 5: Solve for x
    x = 401,253,629,138.88/528,852.80
  6. Step 6: Final answer
    x = 758,724.60

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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.