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Finding the Fourth Proportional to 496,603.46, 685,265.31 and 278,762.26

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Solution

The fourth proportional to 496,603.46, 685,265.31 and 278,762.26 is: 384,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,603.46 : 685,265.31 = 278,762.26 : x
  2. Step 2: Convert to fraction form
    496,603.46/685,265.31 = 278,762.26/x
  3. Step 3: Cross multiply
    496,603.46x = 685,265.31 × 278,762.26
  4. Step 4: Simplify right side
    496,603.46x = 191,026,104,802.04
  5. Step 5: Solve for x
    x = 191,026,104,802.04/496,603.46
  6. Step 6: Final answer
    x = 384,665.28

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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.