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Finding the Fourth Proportional to 659,122.56, 909,635.76 and 372,645.36

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Solution

The fourth proportional to 659,122.56, 909,635.76 and 372,645.36 is: 514,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,122.56 : 909,635.76 = 372,645.36 : x
  2. Step 2: Convert to fraction form
    659,122.56/909,635.76 = 372,645.36/x
  3. Step 3: Cross multiply
    659,122.56x = 909,635.76 × 372,645.36
  4. Step 4: Simplify right side
    659,122.56x = 338,971,545,254.07
  5. Step 5: Solve for x
    x = 338,971,545,254.07/659,122.56
  6. Step 6: Final answer
    x = 514,276.96

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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.