Home / 785,791.40-1,171,809.87-778,608.32

Finding the Fourth Proportional to 785,791.40, 1,171,809.87 and 778,608.32

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Solution

The fourth proportional to 785,791.40, 1,171,809.87 and 778,608.32 is: 1,161,098.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,791.40 : 1,171,809.87 = 778,608.32 : x
  2. Step 2: Convert to fraction form
    785,791.40/1,171,809.87 = 778,608.32/x
  3. Step 3: Cross multiply
    785,791.40x = 1,171,809.87 × 778,608.32
  4. Step 4: Simplify right side
    785,791.40x = 912,380,909,840.96
  5. Step 5: Solve for x
    x = 912,380,909,840.96/785,791.40
  6. Step 6: Final answer
    x = 1,161,098.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.