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Finding the Fourth Proportional to 404,816.70, 607,225.05 and 398,911.80

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Solution

The fourth proportional to 404,816.70, 607,225.05 and 398,911.80 is: 598,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,816.70 : 607,225.05 = 398,911.80 : x
  2. Step 2: Convert to fraction form
    404,816.70/607,225.05 = 398,911.80/x
  3. Step 3: Cross multiply
    404,816.70x = 607,225.05 × 398,911.80
  4. Step 4: Simplify right side
    404,816.70x = 242,229,237,700.59
  5. Step 5: Solve for x
    x = 242,229,237,700.59/404,816.70
  6. Step 6: Final answer
    x = 598,367.70

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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.