Home / 641,428,564.80-885,171,419.52-348,073,132.80

Finding the Fourth Proportional to 641,428,564.80, 885,171,419.52 and 348,073,132.80

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Solution

The fourth proportional to 641,428,564.80, 885,171,419.52 and 348,073,132.80 is: 480,340,923.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,428,564.80 : 885,171,419.52 = 348,073,132.80 : x
  2. Step 2: Convert to fraction form
    641,428,564.80/885,171,419.52 = 348,073,132.80/x
  3. Step 3: Cross multiply
    641,428,564.80x = 885,171,419.52 × 348,073,132.80
  4. Step 4: Simplify right side
    641,428,564.80x = 308,104,389,057,349,504
  5. Step 5: Solve for x
    x = 308,104,389,057,349,504/641,428,564.80
  6. Step 6: Final answer
    x = 480,340,923.32

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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.