Home / 905,696.60-1,358,544.90-485,792.60

Finding the Fourth Proportional to 905,696.60, 1,358,544.90 and 485,792.60

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Solution

The fourth proportional to 905,696.60, 1,358,544.90 and 485,792.60 is: 728,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,696.60 : 1,358,544.90 = 485,792.60 : x
  2. Step 2: Convert to fraction form
    905,696.60/1,358,544.90 = 485,792.60/x
  3. Step 3: Cross multiply
    905,696.60x = 1,358,544.90 × 485,792.60
  4. Step 4: Simplify right side
    905,696.60x = 659,971,059,187.74
  5. Step 5: Solve for x
    x = 659,971,059,187.74/905,696.60
  6. Step 6: Final answer
    x = 728,688.90

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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.