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Finding the Fourth Proportional to 864,462.72, 1,296,886.86 and 265,484.33

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Solution

The fourth proportional to 864,462.72, 1,296,886.86 and 265,484.33 is: 398,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,462.72 : 1,296,886.86 = 265,484.33 : x
  2. Step 2: Convert to fraction form
    864,462.72/1,296,886.86 = 265,484.33/x
  3. Step 3: Cross multiply
    864,462.72x = 1,296,886.86 × 265,484.33
  4. Step 4: Simplify right side
    864,462.72x = 344,303,132,628.47
  5. Step 5: Solve for x
    x = 344,303,132,628.47/864,462.72
  6. Step 6: Final answer
    x = 398,285.69

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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.