Home / 1,215,257.59-1,677,089.34-671,428.45

Finding the Fourth Proportional to 1,215,257.59, 1,677,089.34 and 671,428.45

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Solution

The fourth proportional to 1,215,257.59, 1,677,089.34 and 671,428.45 is: 926,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,257.59 : 1,677,089.34 = 671,428.45 : x
  2. Step 2: Convert to fraction form
    1,215,257.59/1,677,089.34 = 671,428.45/x
  3. Step 3: Cross multiply
    1,215,257.59x = 1,677,089.34 × 671,428.45
  4. Step 4: Simplify right side
    1,215,257.59x = 1,126,045,496,067.72
  5. Step 5: Solve for x
    x = 1,126,045,496,067.72/1,215,257.59
  6. Step 6: Final answer
    x = 926,589.97

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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.