Home / 659,211.78-909,731.45-372,725.72

Finding the Fourth Proportional to 659,211.78, 909,731.45 and 372,725.72

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Solution

The fourth proportional to 659,211.78, 909,731.45 and 372,725.72 is: 514,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,211.78 : 909,731.45 = 372,725.72 : x
  2. Step 2: Convert to fraction form
    659,211.78/909,731.45 = 372,725.72/x
  3. Step 3: Cross multiply
    659,211.78x = 909,731.45 × 372,725.72
  4. Step 4: Simplify right side
    659,211.78x = 339,080,309,502.54
  5. Step 5: Solve for x
    x = 339,080,309,502.54/659,211.78
  6. Step 6: Final answer
    x = 514,372.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.