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Finding the Fourth Proportional to 525,693.78, 788,085.81 and 446,250.78

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Solution

The fourth proportional to 525,693.78, 788,085.81 and 446,250.78 is: 668,990.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,693.78 : 788,085.81 = 446,250.78 : x
  2. Step 2: Convert to fraction form
    525,693.78/788,085.81 = 446,250.78/x
  3. Step 3: Cross multiply
    525,693.78x = 788,085.81 × 446,250.78
  4. Step 4: Simplify right side
    525,693.78x = 351,683,907,419.43
  5. Step 5: Solve for x
    x = 351,683,907,419.43/525,693.78
  6. Step 6: Final answer
    x = 668,990.05

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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.