Home / 641,428,871.38-885,171,842.69-348,073,439.38

Finding the Fourth Proportional to 641,428,871.38, 885,171,842.69 and 348,073,439.38

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Solution

The fourth proportional to 641,428,871.38, 885,171,842.69 and 348,073,439.38 is: 480,341,346.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,428,871.38 : 885,171,842.69 = 348,073,439.38 : x
  2. Step 2: Convert to fraction form
    641,428,871.38/885,171,842.69 = 348,073,439.38/x
  3. Step 3: Cross multiply
    641,428,871.38x = 885,171,842.69 × 348,073,439.38
  4. Step 4: Simplify right side
    641,428,871.38x = 308,104,807,723,487,296
  5. Step 5: Solve for x
    x = 308,104,807,723,487,296/641,428,871.38
  6. Step 6: Final answer
    x = 480,341,346.44

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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.