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Finding the Fourth Proportional to 1,231,822.35, 1,698,938.96 and 748,373.85

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Solution

The fourth proportional to 1,231,822.35, 1,698,938.96 and 748,373.85 is: 1,032,163.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,822.35 : 1,698,938.96 = 748,373.85 : x
  2. Step 2: Convert to fraction form
    1,231,822.35/1,698,938.96 = 748,373.85/x
  3. Step 3: Cross multiply
    1,231,822.35x = 1,698,938.96 × 748,373.85
  4. Step 4: Simplify right side
    1,231,822.35x = 1,271,441,486,668.33
  5. Step 5: Solve for x
    x = 1,271,441,486,668.33/1,231,822.35
  6. Step 6: Final answer
    x = 1,032,163.03

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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.