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Finding the Fourth Proportional to 925,776, 1,388,790.72 and 326,597.76

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Solution

The fourth proportional to 925,776, 1,388,790.72 and 326,597.76 is: 489,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,776 : 1,388,790.72 = 326,597.76 : x
  2. Step 2: Convert to fraction form
    925,776/1,388,790.72 = 326,597.76/x
  3. Step 3: Cross multiply
    925,776x = 1,388,790.72 × 326,597.76
  4. Step 4: Simplify right side
    925,776x = 453,575,938,260.79
  5. Step 5: Solve for x
    x = 453,575,938,260.79/925,776
  6. Step 6: Final answer
    x = 489,941.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.