Home / 744,340.70-1,116,511.05-428,537.90

Finding the Fourth Proportional to 744,340.70, 1,116,511.05 and 428,537.90

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Solution

The fourth proportional to 744,340.70, 1,116,511.05 and 428,537.90 is: 642,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,340.70 : 1,116,511.05 = 428,537.90 : x
  2. Step 2: Convert to fraction form
    744,340.70/1,116,511.05 = 428,537.90/x
  3. Step 3: Cross multiply
    744,340.70x = 1,116,511.05 × 428,537.90
  4. Step 4: Simplify right side
    744,340.70x = 478,467,300,693.80
  5. Step 5: Solve for x
    x = 478,467,300,693.80/744,340.70
  6. Step 6: Final answer
    x = 642,806.85

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Double scale
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Similar ratio
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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.