Home / 1,238,906,207.70-1,858,639,285.89-409,857,892.38

Finding the Fourth Proportional to 1,238,906,207.70, 1,858,639,285.89 and 409,857,892.38

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Solution

The fourth proportional to 1,238,906,207.70, 1,858,639,285.89 and 409,857,892.38 is: 614,879,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,906,207.70 : 1,858,639,285.89 = 409,857,892.38 : x
  2. Step 2: Convert to fraction form
    1,238,906,207.70/1,858,639,285.89 = 409,857,892.38/x
  3. Step 3: Cross multiply
    1,238,906,207.70x = 1,858,639,285.89 × 409,857,892.38
  4. Step 4: Simplify right side
    1,238,906,207.70x = 761,777,980,409,543,680
  5. Step 5: Solve for x
    x = 761,777,980,409,543,680/1,238,906,207.70
  6. Step 6: Final answer
    x = 614,879,460.35

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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.