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Finding the Fourth Proportional to 459,105.80, 688,658.70 and 385,622.60

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Solution

The fourth proportional to 459,105.80, 688,658.70 and 385,622.60 is: 578,433.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,105.80 : 688,658.70 = 385,622.60 : x
  2. Step 2: Convert to fraction form
    459,105.80/688,658.70 = 385,622.60/x
  3. Step 3: Cross multiply
    459,105.80x = 688,658.70 × 385,622.60
  4. Step 4: Simplify right side
    459,105.80x = 265,562,358,406.62
  5. Step 5: Solve for x
    x = 265,562,358,406.62/459,105.80
  6. Step 6: Final answer
    x = 578,433.90

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Similar ratio
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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.