Home / 789,000.20-1,183,500.30-488,506.40

Finding the Fourth Proportional to 789,000.20, 1,183,500.30 and 488,506.40

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Solution

The fourth proportional to 789,000.20, 1,183,500.30 and 488,506.40 is: 732,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,000.20 : 1,183,500.30 = 488,506.40 : x
  2. Step 2: Convert to fraction form
    789,000.20/1,183,500.30 = 488,506.40/x
  3. Step 3: Cross multiply
    789,000.20x = 1,183,500.30 × 488,506.40
  4. Step 4: Simplify right side
    789,000.20x = 578,147,470,951.92
  5. Step 5: Solve for x
    x = 578,147,470,951.92/789,000.20
  6. Step 6: Final answer
    x = 732,759.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.