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Finding the Fourth Proportional to 487,626.70, 731,440.05 and 480,628.30

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Solution

The fourth proportional to 487,626.70, 731,440.05 and 480,628.30 is: 720,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,626.70 : 731,440.05 = 480,628.30 : x
  2. Step 2: Convert to fraction form
    487,626.70/731,440.05 = 480,628.30/x
  3. Step 3: Cross multiply
    487,626.70x = 731,440.05 × 480,628.30
  4. Step 4: Simplify right side
    487,626.70x = 351,550,787,783.42
  5. Step 5: Solve for x
    x = 351,550,787,783.42/487,626.70
  6. Step 6: Final answer
    x = 720,942.45

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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.