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Finding the Fourth Proportional to 681,657.36, 940,741.36 and 375,788.40

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Solution

The fourth proportional to 681,657.36, 940,741.36 and 375,788.40 is: 518,617.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,657.36 : 940,741.36 = 375,788.40 : x
  2. Step 2: Convert to fraction form
    681,657.36/940,741.36 = 375,788.40/x
  3. Step 3: Cross multiply
    681,657.36x = 940,741.36 × 375,788.40
  4. Step 4: Simplify right side
    681,657.36x = 353,519,690,488.22
  5. Step 5: Solve for x
    x = 353,519,690,488.22/681,657.36
  6. Step 6: Final answer
    x = 518,617.87

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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.