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Finding the Fourth Proportional to 681,509.16, 940,489.08 and 375,596.74

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Solution

The fourth proportional to 681,509.16, 940,489.08 and 375,596.74 is: 518,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,509.16 : 940,489.08 = 375,596.74 : x
  2. Step 2: Convert to fraction form
    681,509.16/940,489.08 = 375,596.74/x
  3. Step 3: Cross multiply
    681,509.16x = 940,489.08 × 375,596.74
  4. Step 4: Simplify right side
    681,509.16x = 353,244,632,453.60
  5. Step 5: Solve for x
    x = 353,244,632,453.60/681,509.16
  6. Step 6: Final answer
    x = 518,327.05

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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.