Home / 925,215.20-1,388,341.20-392,645.60

Finding the Fourth Proportional to 925,215.20, 1,388,341.20 and 392,645.60

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Solution

The fourth proportional to 925,215.20, 1,388,341.20 and 392,645.60 is: 589,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,215.20 : 1,388,341.20 = 392,645.60 : x
  2. Step 2: Convert to fraction form
    925,215.20/1,388,341.20 = 392,645.60/x
  3. Step 3: Cross multiply
    925,215.20x = 1,388,341.20 × 392,645.60
  4. Step 4: Simplify right side
    925,215.20x = 545,126,063,478.72
  5. Step 5: Solve for x
    x = 545,126,063,478.72/925,215.20
  6. Step 6: Final answer
    x = 589,188.40

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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.