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Finding the Fourth Proportional to 398,941.80, 598,412.70 and 366,282.60

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Solution

The fourth proportional to 398,941.80, 598,412.70 and 366,282.60 is: 549,423.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,941.80 : 598,412.70 = 366,282.60 : x
  2. Step 2: Convert to fraction form
    398,941.80/598,412.70 = 366,282.60/x
  3. Step 3: Cross multiply
    398,941.80x = 598,412.70 × 366,282.60
  4. Step 4: Simplify right side
    398,941.80x = 219,188,159,629.02
  5. Step 5: Solve for x
    x = 219,188,159,629.02/398,941.80
  6. Step 6: Final answer
    x = 549,423.90

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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.