Home / 1,215,847.86-1,678,078.40-706,845.48

Finding the Fourth Proportional to 1,215,847.86, 1,678,078.40 and 706,845.48

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Solution

The fourth proportional to 1,215,847.86, 1,678,078.40 and 706,845.48 is: 975,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,847.86 : 1,678,078.40 = 706,845.48 : x
  2. Step 2: Convert to fraction form
    1,215,847.86/1,678,078.40 = 706,845.48/x
  3. Step 3: Cross multiply
    1,215,847.86x = 1,678,078.40 × 706,845.48
  4. Step 4: Simplify right side
    1,215,847.86x = 1,186,142,128,591.40
  5. Step 5: Solve for x
    x = 1,186,142,128,591.40/1,215,847.86
  6. Step 6: Final answer
    x = 975,567.89

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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.