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Finding the Fourth Proportional to 571,954.39, 788,969.13 and 356,720.78

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Solution

The fourth proportional to 571,954.39, 788,969.13 and 356,720.78 is: 492,070.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,954.39 : 788,969.13 = 356,720.78 : x
  2. Step 2: Convert to fraction form
    571,954.39/788,969.13 = 356,720.78/x
  3. Step 3: Cross multiply
    571,954.39x = 788,969.13 × 356,720.78
  4. Step 4: Simplify right side
    571,954.39x = 281,441,684,084.24
  5. Step 5: Solve for x
    x = 281,441,684,084.24/571,954.39
  6. Step 6: Final answer
    x = 492,070.15

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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.