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Finding the Fourth Proportional to 803,405.08, 1,203,861.72 and 465,607.90

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Solution

The fourth proportional to 803,405.08, 1,203,861.72 and 465,607.90 is: 697,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,405.08 : 1,203,861.72 = 465,607.90 : x
  2. Step 2: Convert to fraction form
    803,405.08/1,203,861.72 = 465,607.90/x
  3. Step 3: Cross multiply
    803,405.08x = 1,203,861.72 × 465,607.90
  4. Step 4: Simplify right side
    803,405.08x = 560,527,519,890.16
  5. Step 5: Solve for x
    x = 560,527,519,890.16/803,405.08
  6. Step 6: Final answer
    x = 697,689.79

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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.