Home / 426,952.06-640,405.02-216,584.56

Finding the Fourth Proportional to 426,952.06, 640,405.02 and 216,584.56

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Solution

The fourth proportional to 426,952.06, 640,405.02 and 216,584.56 is: 324,865.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,952.06 : 640,405.02 = 216,584.56 : x
  2. Step 2: Convert to fraction form
    426,952.06/640,405.02 = 216,584.56/x
  3. Step 3: Cross multiply
    426,952.06x = 640,405.02 × 216,584.56
  4. Step 4: Simplify right side
    426,952.06x = 138,701,839,478.49
  5. Step 5: Solve for x
    x = 138,701,839,478.49/426,952.06
  6. Step 6: Final answer
    x = 324,865.14

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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.