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Finding the Fourth Proportional to 662,431.40, 992,480.70 and 543,458.60

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Solution

The fourth proportional to 662,431.40, 992,480.70 and 543,458.60 is: 814,230.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,431.40 : 992,480.70 = 543,458.60 : x
  2. Step 2: Convert to fraction form
    662,431.40/992,480.70 = 543,458.60/x
  3. Step 3: Cross multiply
    662,431.40x = 992,480.70 × 543,458.60
  4. Step 4: Simplify right side
    662,431.40x = 539,372,171,749.02
  5. Step 5: Solve for x
    x = 539,372,171,749.02/662,431.40
  6. Step 6: Final answer
    x = 814,230.99

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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.