Home / 1,090,112.40-1,636,140.60-640,270.80

Finding the Fourth Proportional to 1,090,112.40, 1,636,140.60 and 640,270.80

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Solution

The fourth proportional to 1,090,112.40, 1,636,140.60 and 640,270.80 is: 960,977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,112.40 : 1,636,140.60 = 640,270.80 : x
  2. Step 2: Convert to fraction form
    1,090,112.40/1,636,140.60 = 640,270.80/x
  3. Step 3: Cross multiply
    1,090,112.40x = 1,636,140.60 × 640,270.80
  4. Step 4: Simplify right side
    1,090,112.40x = 1,047,573,050,874.48
  5. Step 5: Solve for x
    x = 1,047,573,050,874.48/1,090,112.40
  6. Step 6: Final answer
    x = 960,977.10

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1.5x scale

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.