Home / 1,057,640.40-1,587,367.80-427,006.80

Finding the Fourth Proportional to 1,057,640.40, 1,587,367.80 and 427,006.80

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Solution

The fourth proportional to 1,057,640.40, 1,587,367.80 and 427,006.80 is: 640,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057,640.40 : 1,587,367.80 = 427,006.80 : x
  2. Step 2: Convert to fraction form
    1,057,640.40/1,587,367.80 = 427,006.80/x
  3. Step 3: Cross multiply
    1,057,640.40x = 1,587,367.80 × 427,006.80
  4. Step 4: Simplify right side
    1,057,640.40x = 677,816,844,701.04
  5. Step 5: Solve for x
    x = 677,816,844,701.04/1,057,640.40
  6. Step 6: Final answer
    x = 640,876.47

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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.