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Finding the Fourth Proportional to 617,922.40, 925,328.40 and 406,415.20

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Solution

The fourth proportional to 617,922.40, 925,328.40 and 406,415.20 is: 608,599.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,922.40 : 925,328.40 = 406,415.20 : x
  2. Step 2: Convert to fraction form
    617,922.40/925,328.40 = 406,415.20/x
  3. Step 3: Cross multiply
    617,922.40x = 925,328.40 × 406,415.20
  4. Step 4: Simplify right side
    617,922.40x = 376,067,526,751.68
  5. Step 5: Solve for x
    x = 376,067,526,751.68/617,922.40
  6. Step 6: Final answer
    x = 608,599.93

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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.