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Finding the Fourth Proportional to 626,474.30, 864,409.47 and 381,294.84

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Solution

The fourth proportional to 626,474.30, 864,409.47 and 381,294.84 is: 526,110.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,474.30 : 864,409.47 = 381,294.84 : x
  2. Step 2: Convert to fraction form
    626,474.30/864,409.47 = 381,294.84/x
  3. Step 3: Cross multiply
    626,474.30x = 864,409.47 × 381,294.84
  4. Step 4: Simplify right side
    626,474.30x = 329,594,870,558.14
  5. Step 5: Solve for x
    x = 329,594,870,558.14/626,474.30
  6. Step 6: Final answer
    x = 526,110.76

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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.