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Finding the Fourth Proportional to 406,479.70, 561,035.28 and 270,519.40

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Solution

The fourth proportional to 406,479.70, 561,035.28 and 270,519.40 is: 373,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,479.70 : 561,035.28 = 270,519.40 : x
  2. Step 2: Convert to fraction form
    406,479.70/561,035.28 = 270,519.40/x
  3. Step 3: Cross multiply
    406,479.70x = 561,035.28 × 270,519.40
  4. Step 4: Simplify right side
    406,479.70x = 151,770,927,324.43
  5. Step 5: Solve for x
    x = 151,770,927,324.43/406,479.70
  6. Step 6: Final answer
    x = 373,378.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.