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Finding the Fourth Proportional to 557,783.24, 769,745.70 and 303,134.48

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Solution

The fourth proportional to 557,783.24, 769,745.70 and 303,134.48 is: 418,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,783.24 : 769,745.70 = 303,134.48 : x
  2. Step 2: Convert to fraction form
    557,783.24/769,745.70 = 303,134.48/x
  3. Step 3: Cross multiply
    557,783.24x = 769,745.70 × 303,134.48
  4. Step 4: Simplify right side
    557,783.24x = 233,336,462,501.74
  5. Step 5: Solve for x
    x = 233,336,462,501.74/557,783.24
  6. Step 6: Final answer
    x = 418,328.21

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Similar ratio
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1.5x scale

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.