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Finding the Fourth Proportional to 465,847.80, 698,771.70 and 438,291.60

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Solution

The fourth proportional to 465,847.80, 698,771.70 and 438,291.60 is: 657,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,847.80 : 698,771.70 = 438,291.60 : x
  2. Step 2: Convert to fraction form
    465,847.80/698,771.70 = 438,291.60/x
  3. Step 3: Cross multiply
    465,847.80x = 698,771.70 × 438,291.60
  4. Step 4: Simplify right side
    465,847.80x = 306,265,766,427.72
  5. Step 5: Solve for x
    x = 306,265,766,427.72/465,847.80
  6. Step 6: Final answer
    x = 657,437.40

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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.