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Finding the Fourth Proportional to 790,915.64, 1,186,428.82 and 317,601

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Solution

The fourth proportional to 790,915.64, 1,186,428.82 and 317,601 is: 476,423.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,915.64 : 1,186,428.82 = 317,601 : x
  2. Step 2: Convert to fraction form
    790,915.64/1,186,428.82 = 317,601/x
  3. Step 3: Cross multiply
    790,915.64x = 1,186,428.82 × 317,601
  4. Step 4: Simplify right side
    790,915.64x = 376,810,979,462.32
  5. Step 5: Solve for x
    x = 376,810,979,462.32/790,915.64
  6. Step 6: Final answer
    x = 476,423.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.