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Finding the Fourth Proportional to 719,455.31, 992,822.31 and 397,158.49

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Solution

The fourth proportional to 719,455.31, 992,822.31 and 397,158.49 is: 548,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,455.31 : 992,822.31 = 397,158.49 : x
  2. Step 2: Convert to fraction form
    719,455.31/992,822.31 = 397,158.49/x
  3. Step 3: Cross multiply
    719,455.31x = 992,822.31 × 397,158.49
  4. Step 4: Simplify right side
    719,455.31x = 394,307,804,513.80
  5. Step 5: Solve for x
    x = 394,307,804,513.80/719,455.31
  6. Step 6: Final answer
    x = 548,064.35

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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.