Home / 1,142,136.30-1,575,558.51-774,489.12

Finding the Fourth Proportional to 1,142,136.30, 1,575,558.51 and 774,489.12

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Solution

The fourth proportional to 1,142,136.30, 1,575,558.51 and 774,489.12 is: 1,068,395.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,136.30 : 1,575,558.51 = 774,489.12 : x
  2. Step 2: Convert to fraction form
    1,142,136.30/1,575,558.51 = 774,489.12/x
  3. Step 3: Cross multiply
    1,142,136.30x = 1,575,558.51 × 774,489.12
  4. Step 4: Simplify right side
    1,142,136.30x = 1,220,252,923,918.41
  5. Step 5: Solve for x
    x = 1,220,252,923,918.41/1,142,136.30
  6. Step 6: Final answer
    x = 1,068,395.19

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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.