Home / 830,413,793.70-1,245,620,690.55-485,189,720.10

Finding the Fourth Proportional to 830,413,793.70, 1,245,620,690.55 and 485,189,720.10

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Solution

The fourth proportional to 830,413,793.70, 1,245,620,690.55 and 485,189,720.10 is: 727,784,580.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,413,793.70 : 1,245,620,690.55 = 485,189,720.10 : x
  2. Step 2: Convert to fraction form
    830,413,793.70/1,245,620,690.55 = 485,189,720.10/x
  3. Step 3: Cross multiply
    830,413,793.70x = 1,245,620,690.55 × 485,189,720.10
  4. Step 4: Simplify right side
    830,413,793.70x = 604,362,354,198,723,200
  5. Step 5: Solve for x
    x = 604,362,354,198,723,200/830,413,793.70
  6. Step 6: Final answer
    x = 727,784,580.15

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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.