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Finding the Fourth Proportional to 557,340.33, 769,177.08 and 315,665.89

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Solution

The fourth proportional to 557,340.33, 769,177.08 and 315,665.89 is: 435,645.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,340.33 : 769,177.08 = 315,665.89 : x
  2. Step 2: Convert to fraction form
    557,340.33/769,177.08 = 315,665.89/x
  3. Step 3: Cross multiply
    557,340.33x = 769,177.08 × 315,665.89
  4. Step 4: Simplify right side
    557,340.33x = 242,802,967,525.80
  5. Step 5: Solve for x
    x = 242,802,967,525.80/557,340.33
  6. Step 6: Final answer
    x = 435,645.79

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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.