Home / 744,554.70-1,115,600.85-428,460.30

Finding the Fourth Proportional to 744,554.70, 1,115,600.85 and 428,460.30

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Solution

The fourth proportional to 744,554.70, 1,115,600.85 and 428,460.30 is: 641,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,554.70 : 1,115,600.85 = 428,460.30 : x
  2. Step 2: Convert to fraction form
    744,554.70/1,115,600.85 = 428,460.30/x
  3. Step 3: Cross multiply
    744,554.70x = 1,115,600.85 × 428,460.30
  4. Step 4: Simplify right side
    744,554.70x = 477,990,674,871.26
  5. Step 5: Solve for x
    x = 477,990,674,871.26/744,554.70
  6. Step 6: Final answer
    x = 641,981.95

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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.