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Finding the Fourth Proportional to 984,472.40, 1,476,271.20 and 385,234.40

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Solution

The fourth proportional to 984,472.40, 1,476,271.20 and 385,234.40 is: 577,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,472.40 : 1,476,271.20 = 385,234.40 : x
  2. Step 2: Convert to fraction form
    984,472.40/1,476,271.20 = 385,234.40/x
  3. Step 3: Cross multiply
    984,472.40x = 1,476,271.20 × 385,234.40
  4. Step 4: Simplify right side
    984,472.40x = 568,710,449,969.28
  5. Step 5: Solve for x
    x = 568,710,449,969.28/984,472.40
  6. Step 6: Final answer
    x = 577,680.44

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Double scale
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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.