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Finding the Fourth Proportional to 617,643.81, 926,625.44 and 361,692.53

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Solution

The fourth proportional to 617,643.81, 926,625.44 and 361,692.53 is: 542,632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,643.81 : 926,625.44 = 361,692.53 : x
  2. Step 2: Convert to fraction form
    617,643.81/926,625.44 = 361,692.53/x
  3. Step 3: Cross multiply
    617,643.81x = 926,625.44 × 361,692.53
  4. Step 4: Simplify right side
    617,643.81x = 335,153,502,976.76
  5. Step 5: Solve for x
    x = 335,153,502,976.76/617,643.81
  6. Step 6: Final answer
    x = 542,632.34

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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.