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Finding the Fourth Proportional to 557,448.40, 769,514.34 and 376,405.48

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Solution

The fourth proportional to 557,448.40, 769,514.34 and 376,405.48 is: 519,598.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,448.40 : 769,514.34 = 376,405.48 : x
  2. Step 2: Convert to fraction form
    557,448.40/769,514.34 = 376,405.48/x
  3. Step 3: Cross multiply
    557,448.40x = 769,514.34 × 376,405.48
  4. Step 4: Simplify right side
    557,448.40x = 289,649,414,514.58
  5. Step 5: Solve for x
    x = 289,649,414,514.58/557,448.40
  6. Step 6: Final answer
    x = 519,598.61

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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.