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Finding the Fourth Proportional to 571,954.20, 788,968.86 and 356,720.60

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Solution

The fourth proportional to 571,954.20, 788,968.86 and 356,720.60 is: 492,069.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,954.20 : 788,968.86 = 356,720.60 : x
  2. Step 2: Convert to fraction form
    571,954.20/788,968.86 = 356,720.60/x
  3. Step 3: Cross multiply
    571,954.20x = 788,968.86 × 356,720.60
  4. Step 4: Simplify right side
    571,954.20x = 281,441,441,175.67
  5. Step 5: Solve for x
    x = 281,441,441,175.67/571,954.20
  6. Step 6: Final answer
    x = 492,069.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.