Home / 638,426.23-881,030.87-351,940.03

Finding the Fourth Proportional to 638,426.23, 881,030.87 and 351,940.03

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Solution

The fourth proportional to 638,426.23, 881,030.87 and 351,940.03 is: 485,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,426.23 : 881,030.87 = 351,940.03 : x
  2. Step 2: Convert to fraction form
    638,426.23/881,030.87 = 351,940.03/x
  3. Step 3: Cross multiply
    638,426.23x = 881,030.87 × 351,940.03
  4. Step 4: Simplify right side
    638,426.23x = 310,070,030,818.73
  5. Step 5: Solve for x
    x = 310,070,030,818.73/638,426.23
  6. Step 6: Final answer
    x = 485,678.71

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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.