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Finding the Fourth Proportional to 691,760, 954,628.80 and 373,808

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Solution

The fourth proportional to 691,760, 954,628.80 and 373,808 is: 515,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,760 : 954,628.80 = 373,808 : x
  2. Step 2: Convert to fraction form
    691,760/954,628.80 = 373,808/x
  3. Step 3: Cross multiply
    691,760x = 954,628.80 × 373,808
  4. Step 4: Simplify right side
    691,760x = 356,847,882,470.40
  5. Step 5: Solve for x
    x = 356,847,882,470.40/691,760
  6. Step 6: Final answer
    x = 515,855.04

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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.