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Finding the Fourth Proportional to 404,847.40, 607,271.10 and 398,626.60

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Solution

The fourth proportional to 404,847.40, 607,271.10 and 398,626.60 is: 597,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,847.40 : 607,271.10 = 398,626.60 : x
  2. Step 2: Convert to fraction form
    404,847.40/607,271.10 = 398,626.60/x
  3. Step 3: Cross multiply
    404,847.40x = 607,271.10 × 398,626.60
  4. Step 4: Simplify right side
    404,847.40x = 242,074,413,871.26
  5. Step 5: Solve for x
    x = 242,074,413,871.26/404,847.40
  6. Step 6: Final answer
    x = 597,939.90

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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.