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Finding the Fourth Proportional to 509,466.17, 703,066.52 and 318,591.29

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Solution

The fourth proportional to 509,466.17, 703,066.52 and 318,591.29 is: 439,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,466.17 : 703,066.52 = 318,591.29 : x
  2. Step 2: Convert to fraction form
    509,466.17/703,066.52 = 318,591.29/x
  3. Step 3: Cross multiply
    509,466.17x = 703,066.52 × 318,591.29
  4. Step 4: Simplify right side
    509,466.17x = 223,990,869,562.61
  5. Step 5: Solve for x
    x = 223,990,869,562.61/509,466.17
  6. Step 6: Final answer
    x = 439,657.98

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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.