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Finding the Fourth Proportional to 508,718.44, 702,034.18 and 317,842.55

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Solution

The fourth proportional to 508,718.44, 702,034.18 and 317,842.55 is: 438,624.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,718.44 : 702,034.18 = 317,842.55 : x
  2. Step 2: Convert to fraction form
    508,718.44/702,034.18 = 317,842.55/x
  3. Step 3: Cross multiply
    508,718.44x = 702,034.18 × 317,842.55
  4. Step 4: Simplify right side
    508,718.44x = 223,136,333,958.36
  5. Step 5: Solve for x
    x = 223,136,333,958.36/508,718.44
  6. Step 6: Final answer
    x = 438,624.43

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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.