Home / 769,824,139.80-1,154,736,209.70-339,842,443.80

Finding the Fourth Proportional to 769,824,139.80, 1,154,736,209.70 and 339,842,443.80

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Solution

The fourth proportional to 769,824,139.80, 1,154,736,209.70 and 339,842,443.80 is: 509,763,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,824,139.80 : 1,154,736,209.70 = 339,842,443.80 : x
  2. Step 2: Convert to fraction form
    769,824,139.80/1,154,736,209.70 = 339,842,443.80/x
  3. Step 3: Cross multiply
    769,824,139.80x = 1,154,736,209.70 × 339,842,443.80
  4. Step 4: Simplify right side
    769,824,139.80x = 392,428,375,448,797,312
  5. Step 5: Solve for x
    x = 392,428,375,448,797,312/769,824,139.80
  6. Step 6: Final answer
    x = 509,763,665.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.