Home / 1,090,354.40-1,636,503.60-640,512.80

Finding the Fourth Proportional to 1,090,354.40, 1,636,503.60 and 640,512.80

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Solution

The fourth proportional to 1,090,354.40, 1,636,503.60 and 640,512.80 is: 961,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,354.40 : 1,636,503.60 = 640,512.80 : x
  2. Step 2: Convert to fraction form
    1,090,354.40/1,636,503.60 = 640,512.80/x
  3. Step 3: Cross multiply
    1,090,354.40x = 1,636,503.60 × 640,512.80
  4. Step 4: Simplify right side
    1,090,354.40x = 1,048,201,503,046.08
  5. Step 5: Solve for x
    x = 1,048,201,503,046.08/1,090,354.40
  6. Step 6: Final answer
    x = 961,340.19

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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.