Home / 641,428,403.58-885,171,197.01-348,072,971.58

Finding the Fourth Proportional to 641,428,403.58, 885,171,197.01 and 348,072,971.58

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Solution

The fourth proportional to 641,428,403.58, 885,171,197.01 and 348,072,971.58 is: 480,340,700.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,428,403.58 : 885,171,197.01 = 348,072,971.58 : x
  2. Step 2: Convert to fraction form
    641,428,403.58/885,171,197.01 = 348,072,971.58/x
  3. Step 3: Cross multiply
    641,428,403.58x = 885,171,197.01 × 348,072,971.58
  4. Step 4: Simplify right side
    641,428,403.58x = 308,104,168,900,296,320
  5. Step 5: Solve for x
    x = 308,104,168,900,296,320/641,428,403.58
  6. Step 6: Final answer
    x = 480,340,700.82

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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.