Home / 909,933.40-1,364,964.90-278,846.20

Finding the Fourth Proportional to 909,933.40, 1,364,964.90 and 278,846.20

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Solution

The fourth proportional to 909,933.40, 1,364,964.90 and 278,846.20 is: 418,289.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,933.40 : 1,364,964.90 = 278,846.20 : x
  2. Step 2: Convert to fraction form
    909,933.40/1,364,964.90 = 278,846.20/x
  3. Step 3: Cross multiply
    909,933.40x = 1,364,964.90 × 278,846.20
  4. Step 4: Simplify right side
    909,933.40x = 380,615,275,498.38
  5. Step 5: Solve for x
    x = 380,615,275,498.38/909,933.40
  6. Step 6: Final answer
    x = 418,289.16

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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.