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Finding the Fourth Proportional to 508,715.44, 702,030.04 and 317,839.55

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Solution

The fourth proportional to 508,715.44, 702,030.04 and 317,839.55 is: 438,620.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,715.44 : 702,030.04 = 317,839.55 : x
  2. Step 2: Convert to fraction form
    508,715.44/702,030.04 = 317,839.55/x
  3. Step 3: Cross multiply
    508,715.44x = 702,030.04 × 317,839.55
  4. Step 4: Simplify right side
    508,715.44x = 223,132,907,695.33
  5. Step 5: Solve for x
    x = 223,132,907,695.33/508,715.44
  6. Step 6: Final answer
    x = 438,620.28

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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.