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Finding the Fourth Proportional to 561,640.60, 775,075.26 and 307,002.52

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Solution

The fourth proportional to 561,640.60, 775,075.26 and 307,002.52 is: 423,669.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,640.60 : 775,075.26 = 307,002.52 : x
  2. Step 2: Convert to fraction form
    561,640.60/775,075.26 = 307,002.52/x
  3. Step 3: Cross multiply
    561,640.60x = 775,075.26 × 307,002.52
  4. Step 4: Simplify right side
    561,640.60x = 237,950,058,009.66
  5. Step 5: Solve for x
    x = 237,950,058,009.66/561,640.60
  6. Step 6: Final answer
    x = 423,669.62

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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.