Home / 756,087.40-1,134,131.10-423,620.20

Finding the Fourth Proportional to 756,087.40, 1,134,131.10 and 423,620.20

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Solution

The fourth proportional to 756,087.40, 1,134,131.10 and 423,620.20 is: 635,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,087.40 : 1,134,131.10 = 423,620.20 : x
  2. Step 2: Convert to fraction form
    756,087.40/1,134,131.10 = 423,620.20/x
  3. Step 3: Cross multiply
    756,087.40x = 1,134,131.10 × 423,620.20
  4. Step 4: Simplify right side
    756,087.40x = 480,440,843,408.22
  5. Step 5: Solve for x
    x = 480,440,843,408.22/756,087.40
  6. Step 6: Final answer
    x = 635,430.30

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Half scale
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Double scale
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Similar ratio
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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.