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Finding the Fourth Proportional to 642,287.18, 886,359.69 and 362,885.62

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Solution

The fourth proportional to 642,287.18, 886,359.69 and 362,885.62 is: 500,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,287.18 : 886,359.69 = 362,885.62 : x
  2. Step 2: Convert to fraction form
    642,287.18/886,359.69 = 362,885.62/x
  3. Step 3: Cross multiply
    642,287.18x = 886,359.69 × 362,885.62
  4. Step 4: Simplify right side
    642,287.18x = 321,647,185,648.66
  5. Step 5: Solve for x
    x = 321,647,185,648.66/642,287.18
  6. Step 6: Final answer
    x = 500,784.07

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1.5x scale

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.