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Finding the Fourth Proportional to 553,920.36, 830,880.48 and 317,096.16

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Solution

The fourth proportional to 553,920.36, 830,880.48 and 317,096.16 is: 475,644.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,920.36 : 830,880.48 = 317,096.16 : x
  2. Step 2: Convert to fraction form
    553,920.36/830,880.48 = 317,096.16/x
  3. Step 3: Cross multiply
    553,920.36x = 830,880.48 × 317,096.16
  4. Step 4: Simplify right side
    553,920.36x = 263,469,009,626.96
  5. Step 5: Solve for x
    x = 263,469,009,626.96/553,920.36
  6. Step 6: Final answer
    x = 475,644.21

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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.