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Finding the Fourth Proportional to 571,355.67, 788,453.75 and 313,223.79

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Solution

The fourth proportional to 571,355.67, 788,453.75 and 313,223.79 is: 432,239.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,355.67 : 788,453.75 = 313,223.79 : x
  2. Step 2: Convert to fraction form
    571,355.67/788,453.75 = 313,223.79/x
  3. Step 3: Cross multiply
    571,355.67x = 788,453.75 × 313,223.79
  4. Step 4: Simplify right side
    571,355.67x = 246,962,467,140.01
  5. Step 5: Solve for x
    x = 246,962,467,140.01/571,355.67
  6. Step 6: Final answer
    x = 432,239.46

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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.