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Finding the Fourth Proportional to 508,748.52, 701,930.70 and 317,955.72

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Solution

The fourth proportional to 508,748.52, 701,930.70 and 317,955.72 is: 438,689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,748.52 : 701,930.70 = 317,955.72 : x
  2. Step 2: Convert to fraction form
    508,748.52/701,930.70 = 317,955.72/x
  3. Step 3: Cross multiply
    508,748.52x = 701,930.70 × 317,955.72
  4. Step 4: Simplify right side
    508,748.52x = 223,182,881,108.60
  5. Step 5: Solve for x
    x = 223,182,881,108.60/508,748.52
  6. Step 6: Final answer
    x = 438,689.99

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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.