Home / 876,136.40-1,312,361.40-728,680.40

Finding the Fourth Proportional to 876,136.40, 1,312,361.40 and 728,680.40

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Solution

The fourth proportional to 876,136.40, 1,312,361.40 and 728,680.40 is: 1,091,487.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,136.40 : 1,312,361.40 = 728,680.40 : x
  2. Step 2: Convert to fraction form
    876,136.40/1,312,361.40 = 728,680.40/x
  3. Step 3: Cross multiply
    876,136.40x = 1,312,361.40 × 728,680.40
  4. Step 4: Simplify right side
    876,136.40x = 956,292,029,896.56
  5. Step 5: Solve for x
    x = 956,292,029,896.56/876,136.40
  6. Step 6: Final answer
    x = 1,091,487.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.