Home / 681,323.40-1,021,985.10-636,708.60

Finding the Fourth Proportional to 681,323.40, 1,021,985.10 and 636,708.60

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Solution

The fourth proportional to 681,323.40, 1,021,985.10 and 636,708.60 is: 955,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,323.40 : 1,021,985.10 = 636,708.60 : x
  2. Step 2: Convert to fraction form
    681,323.40/1,021,985.10 = 636,708.60/x
  3. Step 3: Cross multiply
    681,323.40x = 1,021,985.10 × 636,708.60
  4. Step 4: Simplify right side
    681,323.40x = 650,706,702,241.86
  5. Step 5: Solve for x
    x = 650,706,702,241.86/681,323.40
  6. Step 6: Final answer
    x = 955,062.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.