Home / 1,271,431.40-1,754,566.89-690,649.25

Finding the Fourth Proportional to 1,271,431.40, 1,754,566.89 and 690,649.25

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Solution

The fourth proportional to 1,271,431.40, 1,754,566.89 and 690,649.25 is: 953,091.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,431.40 : 1,754,566.89 = 690,649.25 : x
  2. Step 2: Convert to fraction form
    1,271,431.40/1,754,566.89 = 690,649.25/x
  3. Step 3: Cross multiply
    1,271,431.40x = 1,754,566.89 × 690,649.25
  4. Step 4: Simplify right side
    1,271,431.40x = 1,211,790,306,653.33
  5. Step 5: Solve for x
    x = 1,211,790,306,653.33/1,271,431.40
  6. Step 6: Final answer
    x = 953,091.38

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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.