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Finding the Fourth Proportional to 658,666.32, 909,012.88 and 372,245.84

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Solution

The fourth proportional to 658,666.32, 909,012.88 and 372,245.84 is: 513,729.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,666.32 : 909,012.88 = 372,245.84 : x
  2. Step 2: Convert to fraction form
    658,666.32/909,012.88 = 372,245.84/x
  3. Step 3: Cross multiply
    658,666.32x = 909,012.88 × 372,245.84
  4. Step 4: Simplify right side
    658,666.32x = 338,376,263,086.42
  5. Step 5: Solve for x
    x = 338,376,263,086.42/658,666.32
  6. Step 6: Final answer
    x = 513,729.41

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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.