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Finding the Fourth Proportional to 1,397,107, 1,928,007.66 and 761,203

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Solution

The fourth proportional to 1,397,107, 1,928,007.66 and 761,203 is: 1,050,460.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,107 : 1,928,007.66 = 761,203 : x
  2. Step 2: Convert to fraction form
    1,397,107/1,928,007.66 = 761,203/x
  3. Step 3: Cross multiply
    1,397,107x = 1,928,007.66 × 761,203
  4. Step 4: Simplify right side
    1,397,107x = 1,467,605,214,814.98
  5. Step 5: Solve for x
    x = 1,467,605,214,814.98/1,397,107
  6. Step 6: Final answer
    x = 1,050,460.14

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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.