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Finding the Fourth Proportional to 659,064.72, 909,539.64 and 372,596.88

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Solution

The fourth proportional to 659,064.72, 909,539.64 and 372,596.88 is: 514,200.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,064.72 : 909,539.64 = 372,596.88 : x
  2. Step 2: Convert to fraction form
    659,064.72/909,539.64 = 372,596.88/x
  3. Step 3: Cross multiply
    659,064.72x = 909,539.64 × 372,596.88
  4. Step 4: Simplify right side
    659,064.72x = 338,891,632,100.32
  5. Step 5: Solve for x
    x = 338,891,632,100.32/659,064.72
  6. Step 6: Final answer
    x = 514,200.84

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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.