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Finding the Fourth Proportional to 543,692.40, 815,538.60 and 494,703.60

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Solution

The fourth proportional to 543,692.40, 815,538.60 and 494,703.60 is: 742,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,692.40 : 815,538.60 = 494,703.60 : x
  2. Step 2: Convert to fraction form
    543,692.40/815,538.60 = 494,703.60/x
  3. Step 3: Cross multiply
    543,692.40x = 815,538.60 × 494,703.60
  4. Step 4: Simplify right side
    543,692.40x = 403,449,881,358.96
  5. Step 5: Solve for x
    x = 403,449,881,358.96/543,692.40
  6. Step 6: Final answer
    x = 742,055.40

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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.