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Finding the Fourth Proportional to 893,980, 1,233,692.40 and 491,572

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Solution

The fourth proportional to 893,980, 1,233,692.40 and 491,572 is: 678,369.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,980 : 1,233,692.40 = 491,572 : x
  2. Step 2: Convert to fraction form
    893,980/1,233,692.40 = 491,572/x
  3. Step 3: Cross multiply
    893,980x = 1,233,692.40 × 491,572
  4. Step 4: Simplify right side
    893,980x = 606,448,640,452.80
  5. Step 5: Solve for x
    x = 606,448,640,452.80/893,980
  6. Step 6: Final answer
    x = 678,369.36

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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.