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Finding the Fourth Proportional to 508,717.44, 702,032.80 and 317,841.55

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Solution

The fourth proportional to 508,717.44, 702,032.80 and 317,841.55 is: 438,623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,717.44 : 702,032.80 = 317,841.55 : x
  2. Step 2: Convert to fraction form
    508,717.44/702,032.80 = 317,841.55/x
  3. Step 3: Cross multiply
    508,717.44x = 702,032.80 × 317,841.55
  4. Step 4: Simplify right side
    508,717.44x = 223,135,193,302.84
  5. Step 5: Solve for x
    x = 223,135,193,302.84/508,717.44
  6. Step 6: Final answer
    x = 438,623.05

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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.