Home / 656,926.61-906,556.25-355,120.61

Finding the Fourth Proportional to 656,926.61, 906,556.25 and 355,120.61

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Solution

The fourth proportional to 656,926.61, 906,556.25 and 355,120.61 is: 490,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,926.61 : 906,556.25 = 355,120.61 : x
  2. Step 2: Convert to fraction form
    656,926.61/906,556.25 = 355,120.61/x
  3. Step 3: Cross multiply
    656,926.61x = 906,556.25 × 355,120.61
  4. Step 4: Simplify right side
    656,926.61x = 321,936,804,854.33
  5. Step 5: Solve for x
    x = 321,936,804,854.33/656,926.61
  6. Step 6: Final answer
    x = 490,065.10

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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.