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Finding the Fourth Proportional to 674,692.53, 931,110.38 and 388,255.47

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Solution

The fourth proportional to 674,692.53, 931,110.38 and 388,255.47 is: 535,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,692.53 : 931,110.38 = 388,255.47 : x
  2. Step 2: Convert to fraction form
    674,692.53/931,110.38 = 388,255.47/x
  3. Step 3: Cross multiply
    674,692.53x = 931,110.38 × 388,255.47
  4. Step 4: Simplify right side
    674,692.53x = 361,508,698,208.78
  5. Step 5: Solve for x
    x = 361,508,698,208.78/674,692.53
  6. Step 6: Final answer
    x = 535,812.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.