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Finding the Fourth Proportional to 542,365.20, 812,770.20 and 399,092.40

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Solution

The fourth proportional to 542,365.20, 812,770.20 and 399,092.40 is: 598,066.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,365.20 : 812,770.20 = 399,092.40 : x
  2. Step 2: Convert to fraction form
    542,365.20/812,770.20 = 399,092.40/x
  3. Step 3: Cross multiply
    542,365.20x = 812,770.20 × 399,092.40
  4. Step 4: Simplify right side
    542,365.20x = 324,370,409,766.48
  5. Step 5: Solve for x
    x = 324,370,409,766.48/542,365.20
  6. Step 6: Final answer
    x = 598,066.41

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1.5x scale

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.