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Finding the Fourth Proportional to 674,429.28, 930,701.50 and 368,499.12

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Solution

The fourth proportional to 674,429.28, 930,701.50 and 368,499.12 is: 508,522.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,429.28 : 930,701.50 = 368,499.12 : x
  2. Step 2: Convert to fraction form
    674,429.28/930,701.50 = 368,499.12/x
  3. Step 3: Cross multiply
    674,429.28x = 930,701.50 × 368,499.12
  4. Step 4: Simplify right side
    674,429.28x = 342,962,683,732.68
  5. Step 5: Solve for x
    x = 342,962,683,732.68/674,429.28
  6. Step 6: Final answer
    x = 508,522.83

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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.