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Finding the Fourth Proportional to 984,801.70, 1,477,251.15 and 512,409.70

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Solution

The fourth proportional to 984,801.70, 1,477,251.15 and 512,409.70 is: 768,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,801.70 : 1,477,251.15 = 512,409.70 : x
  2. Step 2: Convert to fraction form
    984,801.70/1,477,251.15 = 512,409.70/x
  3. Step 3: Cross multiply
    984,801.70x = 1,477,251.15 × 512,409.70
  4. Step 4: Simplify right side
    984,801.70x = 756,957,818,596.16
  5. Step 5: Solve for x
    x = 756,957,818,596.16/984,801.70
  6. Step 6: Final answer
    x = 768,639.84

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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.