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Finding the Fourth Proportional to 674,676, 931,027.50 and 368,749.87

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Solution

The fourth proportional to 674,676, 931,027.50 and 368,749.87 is: 508,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,676 : 931,027.50 = 368,749.87 : x
  2. Step 2: Convert to fraction form
    674,676/931,027.50 = 368,749.87/x
  3. Step 3: Cross multiply
    674,676x = 931,027.50 × 368,749.87
  4. Step 4: Simplify right side
    674,676x = 343,316,267,263.86
  5. Step 5: Solve for x
    x = 343,316,267,263.86/674,676
  6. Step 6: Final answer
    x = 508,860.95

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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.