Home / 1,057,840.20-1,587,149.10-426,817.80

Finding the Fourth Proportional to 1,057,840.20, 1,587,149.10 and 426,817.80

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Solution

The fourth proportional to 1,057,840.20, 1,587,149.10 and 426,817.80 is: 640,383.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057,840.20 : 1,587,149.10 = 426,817.80 : x
  2. Step 2: Convert to fraction form
    1,057,840.20/1,587,149.10 = 426,817.80/x
  3. Step 3: Cross multiply
    1,057,840.20x = 1,587,149.10 × 426,817.80
  4. Step 4: Simplify right side
    1,057,840.20x = 677,423,487,133.98
  5. Step 5: Solve for x
    x = 677,423,487,133.98/1,057,840.20
  6. Step 6: Final answer
    x = 640,383.57

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Double scale
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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.