Home / 414,845.55-620,792.10-287,890.20

Finding the Fourth Proportional to 414,845.55, 620,792.10 and 287,890.20

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Solution

The fourth proportional to 414,845.55, 620,792.10 and 287,890.20 is: 430,810.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,845.55 : 620,792.10 = 287,890.20 : x
  2. Step 2: Convert to fraction form
    414,845.55/620,792.10 = 287,890.20/x
  3. Step 3: Cross multiply
    414,845.55x = 620,792.10 × 287,890.20
  4. Step 4: Simplify right side
    414,845.55x = 178,719,961,827.42
  5. Step 5: Solve for x
    x = 178,719,961,827.42/414,845.55
  6. Step 6: Final answer
    x = 430,810.84

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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.