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Finding the Fourth Proportional to 617,674.63, 925,305.28 and 425,515.15

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Solution

The fourth proportional to 617,674.63, 925,305.28 and 425,515.15 is: 637,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,674.63 : 925,305.28 = 425,515.15 : x
  2. Step 2: Convert to fraction form
    617,674.63/925,305.28 = 425,515.15/x
  3. Step 3: Cross multiply
    617,674.63x = 925,305.28 × 425,515.15
  4. Step 4: Simplify right side
    617,674.63x = 393,731,415,014.99
  5. Step 5: Solve for x
    x = 393,731,415,014.99/617,674.63
  6. Step 6: Final answer
    x = 637,441.46

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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.