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Finding the Fourth Proportional to 557,988.60, 769,986.36 and 303,334.32

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Solution

The fourth proportional to 557,988.60, 769,986.36 and 303,334.32 is: 418,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,988.60 : 769,986.36 = 303,334.32 : x
  2. Step 2: Convert to fraction form
    557,988.60/769,986.36 = 303,334.32/x
  3. Step 3: Cross multiply
    557,988.60x = 769,986.36 × 303,334.32
  4. Step 4: Simplify right side
    557,988.60x = 233,563,288,919.88
  5. Step 5: Solve for x
    x = 233,563,288,919.88/557,988.60
  6. Step 6: Final answer
    x = 418,580.75

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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.