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Finding the Fourth Proportional to 617,060.40, 926,447.16 and 317,754.80

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Solution

The fourth proportional to 617,060.40, 926,447.16 and 317,754.80 is: 477,073.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,060.40 : 926,447.16 = 317,754.80 : x
  2. Step 2: Convert to fraction form
    617,060.40/926,447.16 = 317,754.80/x
  3. Step 3: Cross multiply
    617,060.40x = 926,447.16 × 317,754.80
  4. Step 4: Simplify right side
    617,060.40x = 294,383,032,036.37
  5. Step 5: Solve for x
    x = 294,383,032,036.37/617,060.40
  6. Step 6: Final answer
    x = 477,073.28

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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.