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Finding the Fourth Proportional to 525,076.80, 786,448.80 and 455,092.80

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Solution

The fourth proportional to 525,076.80, 786,448.80 and 455,092.80 is: 681,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,076.80 : 786,448.80 = 455,092.80 : x
  2. Step 2: Convert to fraction form
    525,076.80/786,448.80 = 455,092.80/x
  3. Step 3: Cross multiply
    525,076.80x = 786,448.80 × 455,092.80
  4. Step 4: Simplify right side
    525,076.80x = 357,907,186,448.64
  5. Step 5: Solve for x
    x = 357,907,186,448.64/525,076.80
  6. Step 6: Final answer
    x = 681,628.26

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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.