Home / 1,215,881.67-1,678,003.58-672,005.75

Finding the Fourth Proportional to 1,215,881.67, 1,678,003.58 and 672,005.75

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Solution

The fourth proportional to 1,215,881.67, 1,678,003.58 and 672,005.75 is: 927,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,881.67 : 1,678,003.58 = 672,005.75 : x
  2. Step 2: Convert to fraction form
    1,215,881.67/1,678,003.58 = 672,005.75/x
  3. Step 3: Cross multiply
    1,215,881.67x = 1,678,003.58 × 672,005.75
  4. Step 4: Simplify right side
    1,215,881.67x = 1,127,628,058,475.59
  5. Step 5: Solve for x
    x = 1,127,628,058,475.59/1,215,881.67
  6. Step 6: Final answer
    x = 927,415.95

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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.