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Finding the Fourth Proportional to 557,286.04, 769,290.16 and 376,243.20

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Solution

The fourth proportional to 557,286.04, 769,290.16 and 376,243.20 is: 519,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,286.04 : 769,290.16 = 376,243.20 : x
  2. Step 2: Convert to fraction form
    557,286.04/769,290.16 = 376,243.20/x
  3. Step 3: Cross multiply
    557,286.04x = 769,290.16 × 376,243.20
  4. Step 4: Simplify right side
    557,286.04x = 289,440,191,526.91
  5. Step 5: Solve for x
    x = 289,440,191,526.91/557,286.04
  6. Step 6: Final answer
    x = 519,374.56

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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.