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Finding the Fourth Proportional to 602,759.48, 831,850.79 and 398,455.38

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Solution

The fourth proportional to 602,759.48, 831,850.79 and 398,455.38 is: 549,896.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,759.48 : 831,850.79 = 398,455.38 : x
  2. Step 2: Convert to fraction form
    602,759.48/831,850.79 = 398,455.38/x
  3. Step 3: Cross multiply
    602,759.48x = 831,850.79 × 398,455.38
  4. Step 4: Simplify right side
    602,759.48x = 331,455,420,640.47
  5. Step 5: Solve for x
    x = 331,455,420,640.47/602,759.48
  6. Step 6: Final answer
    x = 549,896.66

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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.