Home / 925,475.20-1,388,731.20-392,905.60

Finding the Fourth Proportional to 925,475.20, 1,388,731.20 and 392,905.60

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Solution

The fourth proportional to 925,475.20, 1,388,731.20 and 392,905.60 is: 589,578.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,475.20 : 1,388,731.20 = 392,905.60 : x
  2. Step 2: Convert to fraction form
    925,475.20/1,388,731.20 = 392,905.60/x
  3. Step 3: Cross multiply
    925,475.20x = 1,388,731.20 × 392,905.60
  4. Step 4: Simplify right side
    925,475.20x = 545,640,265,374.72
  5. Step 5: Solve for x
    x = 545,640,265,374.72/925,475.20
  6. Step 6: Final answer
    x = 589,578.48

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1.5x scale

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.