Home / 864,390.30-1,296,538.59-265,351.56

Finding the Fourth Proportional to 864,390.30, 1,296,538.59 and 265,351.56

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Solution

The fourth proportional to 864,390.30, 1,296,538.59 and 265,351.56 is: 398,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,390.30 : 1,296,538.59 = 265,351.56 : x
  2. Step 2: Convert to fraction form
    864,390.30/1,296,538.59 = 265,351.56/x
  3. Step 3: Cross multiply
    864,390.30x = 1,296,538.59 × 265,351.56
  4. Step 4: Simplify right side
    864,390.30x = 344,038,537,456.70
  5. Step 5: Solve for x
    x = 344,038,537,456.70/864,390.30
  6. Step 6: Final answer
    x = 398,012.95

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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.