Home / 1,281,335,721.51-1,921,809,384.39-348,731,243.43

Finding the Fourth Proportional to 1,281,335,721.51, 1,921,809,384.39 and 348,731,243.43

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Solution

The fourth proportional to 1,281,335,721.51, 1,921,809,384.39 and 348,731,243.43 is: 523,044,011.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,335,721.51 : 1,921,809,384.39 = 348,731,243.43 : x
  2. Step 2: Convert to fraction form
    1,281,335,721.51/1,921,809,384.39 = 348,731,243.43/x
  3. Step 3: Cross multiply
    1,281,335,721.51x = 1,921,809,384.39 × 348,731,243.43
  4. Step 4: Simplify right side
    1,281,335,721.51x = 670,194,976,253,767,552
  5. Step 5: Solve for x
    x = 670,194,976,253,767,552/1,281,335,721.51
  6. Step 6: Final answer
    x = 523,044,011.81

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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.