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Finding the Fourth Proportional to 557,753.87, 769,708.65 and 303,105.26

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Solution

The fourth proportional to 557,753.87, 769,708.65 and 303,105.26 is: 418,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,753.87 : 769,708.65 = 303,105.26 : x
  2. Step 2: Convert to fraction form
    557,753.87/769,708.65 = 303,105.26/x
  3. Step 3: Cross multiply
    557,753.87x = 769,708.65 × 303,105.26
  4. Step 4: Simplify right side
    557,753.87x = 233,302,740,482.50
  5. Step 5: Solve for x
    x = 233,302,740,482.50/557,753.87
  6. Step 6: Final answer
    x = 418,289.77

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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.