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Finding the Fourth Proportional to 525,908.40, 788,344.20 and 259,450.80

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Solution

The fourth proportional to 525,908.40, 788,344.20 and 259,450.80 is: 388,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,908.40 : 788,344.20 = 259,450.80 : x
  2. Step 2: Convert to fraction form
    525,908.40/788,344.20 = 259,450.80/x
  3. Step 3: Cross multiply
    525,908.40x = 788,344.20 × 259,450.80
  4. Step 4: Simplify right side
    525,908.40x = 204,536,533,365.36
  5. Step 5: Solve for x
    x = 204,536,533,365.36/525,908.40
  6. Step 6: Final answer
    x = 388,920.45

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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.