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Finding the Fourth Proportional to 602,710.56, 831,855.24 and 398,765.52

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Solution

The fourth proportional to 602,710.56, 831,855.24 and 398,765.52 is: 550,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,710.56 : 831,855.24 = 398,765.52 : x
  2. Step 2: Convert to fraction form
    602,710.56/831,855.24 = 398,765.52/x
  3. Step 3: Cross multiply
    602,710.56x = 831,855.24 × 398,765.52
  4. Step 4: Simplify right side
    602,710.56x = 331,715,187,343.33
  5. Step 5: Solve for x
    x = 331,715,187,343.33/602,710.56
  6. Step 6: Final answer
    x = 550,372.28

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1.5x scale

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.