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Finding the Fourth Proportional to 406,446.08, 609,720.96 and 125,980.16

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Solution

The fourth proportional to 406,446.08, 609,720.96 and 125,980.16 is: 188,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,446.08 : 609,720.96 = 125,980.16 : x
  2. Step 2: Convert to fraction form
    406,446.08/609,720.96 = 125,980.16/x
  3. Step 3: Cross multiply
    406,446.08x = 609,720.96 × 125,980.16
  4. Step 4: Simplify right side
    406,446.08x = 76,812,744,096.15
  5. Step 5: Solve for x
    x = 76,812,744,096.15/406,446.08
  6. Step 6: Final answer
    x = 188,986.31

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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.