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Finding the Fourth Proportional to 573,427.81, 791,357.39 and 318,783.25

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Solution

The fourth proportional to 573,427.81, 791,357.39 and 318,783.25 is: 439,935.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,427.81 : 791,357.39 = 318,783.25 : x
  2. Step 2: Convert to fraction form
    573,427.81/791,357.39 = 318,783.25/x
  3. Step 3: Cross multiply
    573,427.81x = 791,357.39 × 318,783.25
  4. Step 4: Simplify right side
    573,427.81x = 252,271,479,101.80
  5. Step 5: Solve for x
    x = 252,271,479,101.80/573,427.81
  6. Step 6: Final answer
    x = 439,935.90

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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.