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Finding the Fourth Proportional to 617,879.40, 925,263.90 and 406,372.20

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Solution

The fourth proportional to 617,879.40, 925,263.90 and 406,372.20 is: 608,535.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,879.40 : 925,263.90 = 406,372.20 : x
  2. Step 2: Convert to fraction form
    617,879.40/925,263.90 = 406,372.20/x
  3. Step 3: Cross multiply
    617,879.40x = 925,263.90 × 406,372.20
  4. Step 4: Simplify right side
    617,879.40x = 376,001,526,623.58
  5. Step 5: Solve for x
    x = 376,001,526,623.58/617,879.40
  6. Step 6: Final answer
    x = 608,535.46

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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.