Home / 648,627.13-972,940.64-328,729.17

Finding the Fourth Proportional to 648,627.13, 972,940.64 and 328,729.17

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Solution

The fourth proportional to 648,627.13, 972,940.64 and 328,729.17 is: 493,093.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,627.13 : 972,940.64 = 328,729.17 : x
  2. Step 2: Convert to fraction form
    648,627.13/972,940.64 = 328,729.17/x
  3. Step 3: Cross multiply
    648,627.13x = 972,940.64 × 328,729.17
  4. Step 4: Simplify right side
    648,627.13x = 319,833,973,516.82
  5. Step 5: Solve for x
    x = 319,833,973,516.82/648,627.13
  6. Step 6: Final answer
    x = 493,093.73

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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.