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Finding the Fourth Proportional to 681,419.74, 940,400.40 and 375,495.60

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Solution

The fourth proportional to 681,419.74, 940,400.40 and 375,495.60 is: 518,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,419.74 : 940,400.40 = 375,495.60 : x
  2. Step 2: Convert to fraction form
    681,419.74/940,400.40 = 375,495.60/x
  3. Step 3: Cross multiply
    681,419.74x = 940,400.40 × 375,495.60
  4. Step 4: Simplify right side
    681,419.74x = 353,116,212,438.24
  5. Step 5: Solve for x
    x = 353,116,212,438.24/681,419.74
  6. Step 6: Final answer
    x = 518,206.61

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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.