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Finding the Fourth Proportional to 658,763.40, 909,069.80 and 372,277.20

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Solution

The fourth proportional to 658,763.40, 909,069.80 and 372,277.20 is: 513,729.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,763.40 : 909,069.80 = 372,277.20 : x
  2. Step 2: Convert to fraction form
    658,763.40/909,069.80 = 372,277.20/x
  3. Step 3: Cross multiply
    658,763.40x = 909,069.80 × 372,277.20
  4. Step 4: Simplify right side
    658,763.40x = 338,425,959,748.56
  5. Step 5: Solve for x
    x = 338,425,959,748.56/658,763.40
  6. Step 6: Final answer
    x = 513,729.15

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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.