Home / 1,090,109.40-1,636,136.10-640,267.80

Finding the Fourth Proportional to 1,090,109.40, 1,636,136.10 and 640,267.80

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Solution

The fourth proportional to 1,090,109.40, 1,636,136.10 and 640,267.80 is: 960,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,109.40 : 1,636,136.10 = 640,267.80 : x
  2. Step 2: Convert to fraction form
    1,090,109.40/1,636,136.10 = 640,267.80/x
  3. Step 3: Cross multiply
    1,090,109.40x = 1,636,136.10 × 640,267.80
  4. Step 4: Simplify right side
    1,090,109.40x = 1,047,565,261,247.58
  5. Step 5: Solve for x
    x = 1,047,565,261,247.58/1,090,109.40
  6. Step 6: Final answer
    x = 960,972.60

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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.