Home / 1,380,139.71-1,904,572.26-768,291.36

Finding the Fourth Proportional to 1,380,139.71, 1,904,572.26 and 768,291.36

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Solution

The fourth proportional to 1,380,139.71, 1,904,572.26 and 768,291.36 is: 1,060,230.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,139.71 : 1,904,572.26 = 768,291.36 : x
  2. Step 2: Convert to fraction form
    1,380,139.71/1,904,572.26 = 768,291.36/x
  3. Step 3: Cross multiply
    1,380,139.71x = 1,904,572.26 × 768,291.36
  4. Step 4: Simplify right side
    1,380,139.71x = 1,463,266,411,853.67
  5. Step 5: Solve for x
    x = 1,463,266,411,853.67/1,380,139.71
  6. Step 6: Final answer
    x = 1,060,230.64

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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.