Home / 1,071,421.72-1,479,557.82-690,103.96

Finding the Fourth Proportional to 1,071,421.72, 1,479,557.82 and 690,103.96

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Solution

The fourth proportional to 1,071,421.72, 1,479,557.82 and 690,103.96 is: 952,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,421.72 : 1,479,557.82 = 690,103.96 : x
  2. Step 2: Convert to fraction form
    1,071,421.72/1,479,557.82 = 690,103.96/x
  3. Step 3: Cross multiply
    1,071,421.72x = 1,479,557.82 × 690,103.96
  4. Step 4: Simplify right side
    1,071,421.72x = 1,021,048,710,630.97
  5. Step 5: Solve for x
    x = 1,021,048,710,630.97/1,071,421.72
  6. Step 6: Final answer
    x = 952,984.89

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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.