Home / 1,530,489.28-2,112,065.28-842,203.12

Finding the Fourth Proportional to 1,530,489.28, 2,112,065.28 and 842,203.12

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Solution

The fourth proportional to 1,530,489.28, 2,112,065.28 and 842,203.12 is: 1,162,234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530,489.28 : 2,112,065.28 = 842,203.12 : x
  2. Step 2: Convert to fraction form
    1,530,489.28/2,112,065.28 = 842,203.12/x
  3. Step 3: Cross multiply
    1,530,489.28x = 2,112,065.28 × 842,203.12
  4. Step 4: Simplify right side
    1,530,489.28x = 1,778,787,968,459.67
  5. Step 5: Solve for x
    x = 1,778,787,968,459.67/1,530,489.28
  6. Step 6: Final answer
    x = 1,162,234.84

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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.