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Finding the Fourth Proportional to 564,554.60, 779,103.78 and 322,749.80

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Solution

The fourth proportional to 564,554.60, 779,103.78 and 322,749.80 is: 445,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,554.60 : 779,103.78 = 322,749.80 : x
  2. Step 2: Convert to fraction form
    564,554.60/779,103.78 = 322,749.80/x
  3. Step 3: Cross multiply
    564,554.60x = 779,103.78 × 322,749.80
  4. Step 4: Simplify right side
    564,554.60x = 251,455,589,174.24
  5. Step 5: Solve for x
    x = 251,455,589,174.24/564,554.60
  6. Step 6: Final answer
    x = 445,405.26

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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.