Home / 1,378,961,391.72-2,068,428,456.09-631,765,219.62

Finding the Fourth Proportional to 1,378,961,391.72, 2,068,428,456.09 and 631,765,219.62

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Solution

The fourth proportional to 1,378,961,391.72, 2,068,428,456.09 and 631,765,219.62 is: 947,641,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,961,391.72 : 2,068,428,456.09 = 631,765,219.62 : x
  2. Step 2: Convert to fraction form
    1,378,961,391.72/2,068,428,456.09 = 631,765,219.62/x
  3. Step 3: Cross multiply
    1,378,961,391.72x = 2,068,428,456.09 × 631,765,219.62
  4. Step 4: Simplify right side
    1,378,961,391.72x = 1,306,761,157,829,956,352
  5. Step 5: Solve for x
    x = 1,306,761,157,829,956,352/1,378,961,391.72
  6. Step 6: Final answer
    x = 947,641,584.22

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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.