Home / 1,126,723.46-1,554,726.21-643,257.86

Finding the Fourth Proportional to 1,126,723.46, 1,554,726.21 and 643,257.86

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Solution

The fourth proportional to 1,126,723.46, 1,554,726.21 and 643,257.86 is: 887,608.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,723.46 : 1,554,726.21 = 643,257.86 : x
  2. Step 2: Convert to fraction form
    1,126,723.46/1,554,726.21 = 643,257.86/x
  3. Step 3: Cross multiply
    1,126,723.46x = 1,554,726.21 × 643,257.86
  4. Step 4: Simplify right side
    1,126,723.46x = 1,000,089,854,730.51
  5. Step 5: Solve for x
    x = 1,000,089,854,730.51/1,126,723.46
  6. Step 6: Final answer
    x = 887,608.97

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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.