Home / 641,428,411.12-885,171,207.36-348,072,979.12

Finding the Fourth Proportional to 641,428,411.12, 885,171,207.36 and 348,072,979.12

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Solution

The fourth proportional to 641,428,411.12, 885,171,207.36 and 348,072,979.12 is: 480,340,711.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,428,411.12 : 885,171,207.36 = 348,072,979.12 : x
  2. Step 2: Convert to fraction form
    641,428,411.12/885,171,207.36 = 348,072,979.12/x
  3. Step 3: Cross multiply
    641,428,411.12x = 885,171,207.36 × 348,072,979.12
  4. Step 4: Simplify right side
    641,428,411.12x = 308,104,179,177,042,496
  5. Step 5: Solve for x
    x = 308,104,179,177,042,496/641,428,411.12
  6. Step 6: Final answer
    x = 480,340,711.19

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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.