Home / 641,428,890.49-885,171,869.07-348,073,458.49

Finding the Fourth Proportional to 641,428,890.49, 885,171,869.07 and 348,073,458.49

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Solution

The fourth proportional to 641,428,890.49, 885,171,869.07 and 348,073,458.49 is: 480,341,372.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,428,890.49 : 885,171,869.07 = 348,073,458.49 : x
  2. Step 2: Convert to fraction form
    641,428,890.49/885,171,869.07 = 348,073,458.49/x
  3. Step 3: Cross multiply
    641,428,890.49x = 885,171,869.07 × 348,073,458.49
  4. Step 4: Simplify right side
    641,428,890.49x = 308,104,833,825,034,304
  5. Step 5: Solve for x
    x = 308,104,833,825,034,304/641,428,890.49
  6. Step 6: Final answer
    x = 480,341,372.82

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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.