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Finding the Fourth Proportional to 674,401.86, 930,663.48 and 368,471.64

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Solution

The fourth proportional to 674,401.86, 930,663.48 and 368,471.64 is: 508,484.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,401.86 : 930,663.48 = 368,471.64 : x
  2. Step 2: Convert to fraction form
    674,401.86/930,663.48 = 368,471.64/x
  3. Step 3: Cross multiply
    674,401.86x = 930,663.48 × 368,471.64
  4. Step 4: Simplify right side
    674,401.86x = 342,923,098,763.71
  5. Step 5: Solve for x
    x = 342,923,098,763.71/674,401.86
  6. Step 6: Final answer
    x = 508,484.81

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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.