Home / 505,031.70-757,729.77-312,682.29

Finding the Fourth Proportional to 505,031.70, 757,729.77 and 312,682.29

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Solution

The fourth proportional to 505,031.70, 757,729.77 and 312,682.29 is: 469,136.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,031.70 : 757,729.77 = 312,682.29 : x
  2. Step 2: Convert to fraction form
    505,031.70/757,729.77 = 312,682.29/x
  3. Step 3: Cross multiply
    505,031.70x = 757,729.77 × 312,682.29
  4. Step 4: Simplify right side
    505,031.70x = 236,928,679,684.77
  5. Step 5: Solve for x
    x = 236,928,679,684.77/505,031.70
  6. Step 6: Final answer
    x = 469,136.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.