Home / 426,306.27-639,658.82-186,389.10

Finding the Fourth Proportional to 426,306.27, 639,658.82 and 186,389.10

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Solution

The fourth proportional to 426,306.27, 639,658.82 and 186,389.10 is: 279,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,306.27 : 639,658.82 = 186,389.10 : x
  2. Step 2: Convert to fraction form
    426,306.27/639,658.82 = 186,389.10/x
  3. Step 3: Cross multiply
    426,306.27x = 639,658.82 × 186,389.10
  4. Step 4: Simplify right side
    426,306.27x = 119,225,432,232.84
  5. Step 5: Solve for x
    x = 119,225,432,232.84/426,306.27
  6. Step 6: Final answer
    x = 279,670.84

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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.