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Finding the Fourth Proportional to 509,315.52, 703,104.72 and 318,390.48

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Solution

The fourth proportional to 509,315.52, 703,104.72 and 318,390.48 is: 439,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,315.52 : 703,104.72 = 318,390.48 : x
  2. Step 2: Convert to fraction form
    509,315.52/703,104.72 = 318,390.48/x
  3. Step 3: Cross multiply
    509,315.52x = 703,104.72 × 318,390.48
  4. Step 4: Simplify right side
    509,315.52x = 223,861,849,291.07
  5. Step 5: Solve for x
    x = 223,861,849,291.07/509,315.52
  6. Step 6: Final answer
    x = 439,534.71

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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.