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Finding the Fourth Proportional to 550,623.84, 759,861.18 and 321,338.76

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Solution

The fourth proportional to 550,623.84, 759,861.18 and 321,338.76 is: 443,447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,623.84 : 759,861.18 = 321,338.76 : x
  2. Step 2: Convert to fraction form
    550,623.84/759,861.18 = 321,338.76/x
  3. Step 3: Cross multiply
    550,623.84x = 759,861.18 × 321,338.76
  4. Step 4: Simplify right side
    550,623.84x = 244,172,849,353.34
  5. Step 5: Solve for x
    x = 244,172,849,353.34/550,623.84
  6. Step 6: Final answer
    x = 443,447.65

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1.5x scale

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.