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Finding the Fourth Proportional to 631,293.10, 870,958.11 and 373,115.86

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Solution

The fourth proportional to 631,293.10, 870,958.11 and 373,115.86 is: 514,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,293.10 : 870,958.11 = 373,115.86 : x
  2. Step 2: Convert to fraction form
    631,293.10/870,958.11 = 373,115.86/x
  3. Step 3: Cross multiply
    631,293.10x = 870,958.11 × 373,115.86
  4. Step 4: Simplify right side
    631,293.10x = 324,968,284,236.63
  5. Step 5: Solve for x
    x = 324,968,284,236.63/631,293.10
  6. Step 6: Final answer
    x = 514,766.10

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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.