Home / 1,105,136.28-1,525,072.86-621,701.28

Finding the Fourth Proportional to 1,105,136.28, 1,525,072.86 and 621,701.28

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Solution

The fourth proportional to 1,105,136.28, 1,525,072.86 and 621,701.28 is: 857,939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,136.28 : 1,525,072.86 = 621,701.28 : x
  2. Step 2: Convert to fraction form
    1,105,136.28/1,525,072.86 = 621,701.28/x
  3. Step 3: Cross multiply
    1,105,136.28x = 1,525,072.86 × 621,701.28
  4. Step 4: Simplify right side
    1,105,136.28x = 948,139,749,155.26
  5. Step 5: Solve for x
    x = 948,139,749,155.26/1,105,136.28
  6. Step 6: Final answer
    x = 857,939.21

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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.