Home / 1,380,125.40-1,904,628.78-768,303.24

Finding the Fourth Proportional to 1,380,125.40, 1,904,628.78 and 768,303.24

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Solution

The fourth proportional to 1,380,125.40, 1,904,628.78 and 768,303.24 is: 1,060,289.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,125.40 : 1,904,628.78 = 768,303.24 : x
  2. Step 2: Convert to fraction form
    1,380,125.40/1,904,628.78 = 768,303.24/x
  3. Step 3: Cross multiply
    1,380,125.40x = 1,904,628.78 × 768,303.24
  4. Step 4: Simplify right side
    1,380,125.40x = 1,463,332,462,671.25
  5. Step 5: Solve for x
    x = 1,463,332,462,671.25/1,380,125.40
  6. Step 6: Final answer
    x = 1,060,289.49

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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.