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Finding the Fourth Proportional to 631,245.81, 870,542.29 and 493,442.94

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Solution

The fourth proportional to 631,245.81, 870,542.29 and 493,442.94 is: 680,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,245.81 : 870,542.29 = 493,442.94 : x
  2. Step 2: Convert to fraction form
    631,245.81/870,542.29 = 493,442.94/x
  3. Step 3: Cross multiply
    631,245.81x = 870,542.29 × 493,442.94
  4. Step 4: Simplify right side
    631,245.81x = 429,562,944,504.72
  5. Step 5: Solve for x
    x = 429,562,944,504.72/631,245.81
  6. Step 6: Final answer
    x = 680,500.27

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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.