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Finding the Fourth Proportional to 691,446, 954,195.48 and 373,494

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Solution

The fourth proportional to 691,446, 954,195.48 and 373,494 is: 515,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,446 : 954,195.48 = 373,494 : x
  2. Step 2: Convert to fraction form
    691,446/954,195.48 = 373,494/x
  3. Step 3: Cross multiply
    691,446x = 954,195.48 × 373,494
  4. Step 4: Simplify right side
    691,446x = 356,386,286,607.12
  5. Step 5: Solve for x
    x = 356,386,286,607.12/691,446
  6. Step 6: Final answer
    x = 515,421.72

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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.