Home / 638,405.24-881,005.38-351,935.60

Finding the Fourth Proportional to 638,405.24, 881,005.38 and 351,935.60

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Solution

The fourth proportional to 638,405.24, 881,005.38 and 351,935.60 is: 485,674.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,405.24 : 881,005.38 = 351,935.60 : x
  2. Step 2: Convert to fraction form
    638,405.24/881,005.38 = 351,935.60/x
  3. Step 3: Cross multiply
    638,405.24x = 881,005.38 × 351,935.60
  4. Step 4: Simplify right side
    638,405.24x = 310,057,157,013.53
  5. Step 5: Solve for x
    x = 310,057,157,013.53/638,405.24
  6. Step 6: Final answer
    x = 485,674.52

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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.