Home / 519,814.80-717,356.34-305,109.72

Finding the Fourth Proportional to 519,814.80, 717,356.34 and 305,109.72

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Solution

The fourth proportional to 519,814.80, 717,356.34 and 305,109.72 is: 421,058.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,814.80 : 717,356.34 = 305,109.72 : x
  2. Step 2: Convert to fraction form
    519,814.80/717,356.34 = 305,109.72/x
  3. Step 3: Cross multiply
    519,814.80x = 717,356.34 × 305,109.72
  4. Step 4: Simplify right side
    519,814.80x = 218,872,392,037.63
  5. Step 5: Solve for x
    x = 218,872,392,037.63/519,814.80
  6. Step 6: Final answer
    x = 421,058.41

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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.