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Finding the Fourth Proportional to 557,855.60, 769,845.40 and 303,206.72

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Solution

The fourth proportional to 557,855.60, 769,845.40 and 303,206.72 is: 418,427.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,855.60 : 769,845.40 = 303,206.72 : x
  2. Step 2: Convert to fraction form
    557,855.60/769,845.40 = 303,206.72/x
  3. Step 3: Cross multiply
    557,855.60x = 769,845.40 × 303,206.72
  4. Step 4: Simplify right side
    557,855.60x = 233,422,298,641.09
  5. Step 5: Solve for x
    x = 233,422,298,641.09/557,855.60
  6. Step 6: Final answer
    x = 418,427.81

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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.