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Finding the Fourth Proportional to 398,514.80, 598,463.40 and 281,010.80

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Solution

The fourth proportional to 398,514.80, 598,463.40 and 281,010.80 is: 422,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,514.80 : 598,463.40 = 281,010.80 : x
  2. Step 2: Convert to fraction form
    398,514.80/598,463.40 = 281,010.80/x
  3. Step 3: Cross multiply
    398,514.80x = 598,463.40 × 281,010.80
  4. Step 4: Simplify right side
    398,514.80x = 168,174,678,804.72
  5. Step 5: Solve for x
    x = 168,174,678,804.72/398,514.80
  6. Step 6: Final answer
    x = 422,003.60

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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.