Home / 389,619,553.84-537,668,338.69-211,001,991.35

Finding the Fourth Proportional to 389,619,553.84, 537,668,338.69 and 211,001,991.35

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Solution

The fourth proportional to 389,619,553.84, 537,668,338.69 and 211,001,991.35 is: 291,179,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,619,553.84 : 537,668,338.69 = 211,001,991.35 : x
  2. Step 2: Convert to fraction form
    389,619,553.84/537,668,338.69 = 211,001,991.35/x
  3. Step 3: Cross multiply
    389,619,553.84x = 537,668,338.69 × 211,001,991.35
  4. Step 4: Simplify right side
    389,619,553.84x = 113,449,090,148,527,888
  5. Step 5: Solve for x
    x = 113,449,090,148,527,888/389,619,553.84
  6. Step 6: Final answer
    x = 291,179,149.07

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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.