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Finding the Fourth Proportional to 681,432.16, 940,363.45 and 375,536.81

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Solution

The fourth proportional to 681,432.16, 940,363.45 and 375,536.81 is: 518,233.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,432.16 : 940,363.45 = 375,536.81 : x
  2. Step 2: Convert to fraction form
    681,432.16/940,363.45 = 375,536.81/x
  3. Step 3: Cross multiply
    681,432.16x = 940,363.45 × 375,536.81
  4. Step 4: Simplify right side
    681,432.16x = 353,141,090,253.60
  5. Step 5: Solve for x
    x = 353,141,090,253.60/681,432.16
  6. Step 6: Final answer
    x = 518,233.67

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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.