Home / 857,970.41-1,181,726.31-639,478.89

Finding the Fourth Proportional to 857,970.41, 1,181,726.31 and 639,478.89

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Solution

The fourth proportional to 857,970.41, 1,181,726.31 and 639,478.89 is: 880,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,970.41 : 1,181,726.31 = 639,478.89 : x
  2. Step 2: Convert to fraction form
    857,970.41/1,181,726.31 = 639,478.89/x
  3. Step 3: Cross multiply
    857,970.41x = 1,181,726.31 × 639,478.89
  4. Step 4: Simplify right side
    857,970.41x = 755,689,029,002.60
  5. Step 5: Solve for x
    x = 755,689,029,002.60/857,970.41
  6. Step 6: Final answer
    x = 880,786.83

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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.