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Finding the Fourth Proportional to 557,447.40, 769,512.96 and 376,404.48

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Solution

The fourth proportional to 557,447.40, 769,512.96 and 376,404.48 is: 519,597.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,447.40 : 769,512.96 = 376,404.48 : x
  2. Step 2: Convert to fraction form
    557,447.40/769,512.96 = 376,404.48/x
  3. Step 3: Cross multiply
    557,447.40x = 769,512.96 × 376,404.48
  4. Step 4: Simplify right side
    557,447.40x = 289,648,125,562.06
  5. Step 5: Solve for x
    x = 289,648,125,562.06/557,447.40
  6. Step 6: Final answer
    x = 519,597.23

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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.