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Finding the Fourth Proportional to 571,401.22, 788,542.58 and 313,301.74

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Solution

The fourth proportional to 571,401.22, 788,542.58 and 313,301.74 is: 432,361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,401.22 : 788,542.58 = 313,301.74 : x
  2. Step 2: Convert to fraction form
    571,401.22/788,542.58 = 313,301.74/x
  3. Step 3: Cross multiply
    571,401.22x = 788,542.58 × 313,301.74
  4. Step 4: Simplify right side
    571,401.22x = 247,051,762,378.09
  5. Step 5: Solve for x
    x = 247,051,762,378.09/571,401.22
  6. Step 6: Final answer
    x = 432,361.28

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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.