Home / 1,136,842.72-1,564,860.89-991,391.88

Finding the Fourth Proportional to 1,136,842.72, 1,564,860.89 and 991,391.88

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Solution

The fourth proportional to 1,136,842.72, 1,564,860.89 and 991,391.88 is: 1,364,648.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136,842.72 : 1,564,860.89 = 991,391.88 : x
  2. Step 2: Convert to fraction form
    1,136,842.72/1,564,860.89 = 991,391.88/x
  3. Step 3: Cross multiply
    1,136,842.72x = 1,564,860.89 × 991,391.88
  4. Step 4: Simplify right side
    1,136,842.72x = 1,551,390,379,675.57
  5. Step 5: Solve for x
    x = 1,551,390,379,675.57/1,136,842.72
  6. Step 6: Final answer
    x = 1,364,648.21

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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.