Home / 829,720.77-1,145,125.67-485,661.93

Finding the Fourth Proportional to 829,720.77, 1,145,125.67 and 485,661.93

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Solution

The fourth proportional to 829,720.77, 1,145,125.67 and 485,661.93 is: 670,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,720.77 : 1,145,125.67 = 485,661.93 : x
  2. Step 2: Convert to fraction form
    829,720.77/1,145,125.67 = 485,661.93/x
  3. Step 3: Cross multiply
    829,720.77x = 1,145,125.67 × 485,661.93
  4. Step 4: Simplify right side
    829,720.77x = 556,143,940,556.43
  5. Step 5: Solve for x
    x = 556,143,940,556.43/829,720.77
  6. Step 6: Final answer
    x = 670,278.44

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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.