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Finding the Fourth Proportional to 681,842.10, 940,898.76 and 375,901.77

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Solution

The fourth proportional to 681,842.10, 940,898.76 and 375,901.77 is: 518,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,842.10 : 940,898.76 = 375,901.77 : x
  2. Step 2: Convert to fraction form
    681,842.10/940,898.76 = 375,901.77/x
  3. Step 3: Cross multiply
    681,842.10x = 940,898.76 × 375,901.77
  4. Step 4: Simplify right side
    681,842.10x = 353,685,509,274.81
  5. Step 5: Solve for x
    x = 353,685,509,274.81/681,842.10
  6. Step 6: Final answer
    x = 518,720.55

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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.