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Finding the Fourth Proportional to 557,915.66, 769,924.12 and 303,266.85

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Solution

The fourth proportional to 557,915.66, 769,924.12 and 303,266.85 is: 418,508.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,915.66 : 769,924.12 = 303,266.85 : x
  2. Step 2: Convert to fraction form
    557,915.66/769,924.12 = 303,266.85/x
  3. Step 3: Cross multiply
    557,915.66x = 769,924.12 × 303,266.85
  4. Step 4: Simplify right side
    557,915.66x = 233,492,461,896.78
  5. Step 5: Solve for x
    x = 233,492,461,896.78/557,915.66
  6. Step 6: Final answer
    x = 418,508.53

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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.