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Finding the Fourth Proportional to 636,010.40, 954,015.60 and 449,386.40

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Solution

The fourth proportional to 636,010.40, 954,015.60 and 449,386.40 is: 674,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,010.40 : 954,015.60 = 449,386.40 : x
  2. Step 2: Convert to fraction form
    636,010.40/954,015.60 = 449,386.40/x
  3. Step 3: Cross multiply
    636,010.40x = 954,015.60 × 449,386.40
  4. Step 4: Simplify right side
    636,010.40x = 428,721,636,027.84
  5. Step 5: Solve for x
    x = 428,721,636,027.84/636,010.40
  6. Step 6: Final answer
    x = 674,079.60

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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.