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Finding the Fourth Proportional to 659,212.88, 909,688.52 and 372,738.96

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Solution

The fourth proportional to 659,212.88, 909,688.52 and 372,738.96 is: 514,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,212.88 : 909,688.52 = 372,738.96 : x
  2. Step 2: Convert to fraction form
    659,212.88/909,688.52 = 372,738.96/x
  3. Step 3: Cross multiply
    659,212.88x = 909,688.52 × 372,738.96
  4. Step 4: Simplify right side
    659,212.88x = 339,076,353,800.59
  5. Step 5: Solve for x
    x = 339,076,353,800.59/659,212.88
  6. Step 6: Final answer
    x = 514,365.49

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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.