Home / 642,288.57-886,651.07-458,665.53

Finding the Fourth Proportional to 642,288.57, 886,651.07 and 458,665.53

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Solution

The fourth proportional to 642,288.57, 886,651.07 and 458,665.53 is: 633,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,288.57 : 886,651.07 = 458,665.53 : x
  2. Step 2: Convert to fraction form
    642,288.57/886,651.07 = 458,665.53/x
  3. Step 3: Cross multiply
    642,288.57x = 886,651.07 × 458,665.53
  4. Step 4: Simplify right side
    642,288.57x = 406,676,280,653.29
  5. Step 5: Solve for x
    x = 406,676,280,653.29/642,288.57
  6. Step 6: Final answer
    x = 633,167.55

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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.