Home / 781,817.94-1,078,352.56-717,494.89

Finding the Fourth Proportional to 781,817.94, 1,078,352.56 and 717,494.89

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Solution

The fourth proportional to 781,817.94, 1,078,352.56 and 717,494.89 is: 989,632.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,817.94 : 1,078,352.56 = 717,494.89 : x
  2. Step 2: Convert to fraction form
    781,817.94/1,078,352.56 = 717,494.89/x
  3. Step 3: Cross multiply
    781,817.94x = 1,078,352.56 × 717,494.89
  4. Step 4: Simplify right side
    781,817.94x = 773,712,450,967.35
  5. Step 5: Solve for x
    x = 773,712,450,967.35/781,817.94
  6. Step 6: Final answer
    x = 989,632.51

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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.