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Finding the Fourth Proportional to 406,096.62, 608,479.11 and 287,555.15

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Solution

The fourth proportional to 406,096.62, 608,479.11 and 287,555.15 is: 430,861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,096.62 : 608,479.11 = 287,555.15 : x
  2. Step 2: Convert to fraction form
    406,096.62/608,479.11 = 287,555.15/x
  3. Step 3: Cross multiply
    406,096.62x = 608,479.11 × 287,555.15
  4. Step 4: Simplify right side
    406,096.62x = 174,971,298,705.52
  5. Step 5: Solve for x
    x = 174,971,298,705.52/406,096.62
  6. Step 6: Final answer
    x = 430,861.25

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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.