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Finding the Fourth Proportional to 864,405.50, 1,296,615.54 and 303,440

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Solution

The fourth proportional to 864,405.50, 1,296,615.54 and 303,440 is: 455,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,405.50 : 1,296,615.54 = 303,440 : x
  2. Step 2: Convert to fraction form
    864,405.50/1,296,615.54 = 303,440/x
  3. Step 3: Cross multiply
    864,405.50x = 1,296,615.54 × 303,440
  4. Step 4: Simplify right side
    864,405.50x = 393,445,019,457.60
  5. Step 5: Solve for x
    x = 393,445,019,457.60/864,405.50
  6. Step 6: Final answer
    x = 455,162.56

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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.