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Finding the Fourth Proportional to 612,489.04, 918,733.64 and 191,797.76

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Solution

The fourth proportional to 612,489.04, 918,733.64 and 191,797.76 is: 287,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,489.04 : 918,733.64 = 191,797.76 : x
  2. Step 2: Convert to fraction form
    612,489.04/918,733.64 = 191,797.76/x
  3. Step 3: Cross multiply
    612,489.04x = 918,733.64 × 191,797.76
  4. Step 4: Simplify right side
    612,489.04x = 176,211,054,188.65
  5. Step 5: Solve for x
    x = 176,211,054,188.65/612,489.04
  6. Step 6: Final answer
    x = 287,696.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.