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Finding the Fourth Proportional to 479,622.60, 719,433.90 and 459,145.80

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Solution

The fourth proportional to 479,622.60, 719,433.90 and 459,145.80 is: 688,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,622.60 : 719,433.90 = 459,145.80 : x
  2. Step 2: Convert to fraction form
    479,622.60/719,433.90 = 459,145.80/x
  3. Step 3: Cross multiply
    479,622.60x = 719,433.90 × 459,145.80
  4. Step 4: Simplify right side
    479,622.60x = 330,325,053,562.62
  5. Step 5: Solve for x
    x = 330,325,053,562.62/479,622.60
  6. Step 6: Final answer
    x = 688,718.70

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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.