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Finding the Fourth Proportional to 620,465.84, 928,861.68 and 383,045.12

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Solution

The fourth proportional to 620,465.84, 928,861.68 and 383,045.12 is: 573,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,465.84 : 928,861.68 = 383,045.12 : x
  2. Step 2: Convert to fraction form
    620,465.84/928,861.68 = 383,045.12/x
  3. Step 3: Cross multiply
    620,465.84x = 928,861.68 × 383,045.12
  4. Step 4: Simplify right side
    620,465.84x = 355,795,933,679.00
  5. Step 5: Solve for x
    x = 355,795,933,679.00/620,465.84
  6. Step 6: Final answer
    x = 573,433.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.