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Finding the Fourth Proportional to 571,638.69, 788,892.93 and 316,984.41

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Solution

The fourth proportional to 571,638.69, 788,892.93 and 316,984.41 is: 437,455.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,638.69 : 788,892.93 = 316,984.41 : x
  2. Step 2: Convert to fraction form
    571,638.69/788,892.93 = 316,984.41/x
  3. Step 3: Cross multiply
    571,638.69x = 788,892.93 × 316,984.41
  4. Step 4: Simplify right side
    571,638.69x = 250,066,759,969.22
  5. Step 5: Solve for x
    x = 250,066,759,969.22/571,638.69
  6. Step 6: Final answer
    x = 437,455.97

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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.