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Finding the Fourth Proportional to 557,920.53, 769,930.85 and 303,271.71

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Solution

The fourth proportional to 557,920.53, 769,930.85 and 303,271.71 is: 418,515.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,920.53 : 769,930.85 = 303,271.71 : x
  2. Step 2: Convert to fraction form
    557,920.53/769,930.85 = 303,271.71/x
  3. Step 3: Cross multiply
    557,920.53x = 769,930.85 × 303,271.71
  4. Step 4: Simplify right side
    557,920.53x = 233,498,243,944.90
  5. Step 5: Solve for x
    x = 233,498,243,944.90/557,920.53
  6. Step 6: Final answer
    x = 418,515.24

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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.