Home / 800,341,214.60-1,200,511,821.90-664,292,318.60

Finding the Fourth Proportional to 800,341,214.60, 1,200,511,821.90 and 664,292,318.60

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Solution

The fourth proportional to 800,341,214.60, 1,200,511,821.90 and 664,292,318.60 is: 996,438,477.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,341,214.60 : 1,200,511,821.90 = 664,292,318.60 : x
  2. Step 2: Convert to fraction form
    800,341,214.60/1,200,511,821.90 = 664,292,318.60/x
  3. Step 3: Cross multiply
    800,341,214.60x = 1,200,511,821.90 × 664,292,318.60
  4. Step 4: Simplify right side
    800,341,214.60x = 797,490,781,676,661,376
  5. Step 5: Solve for x
    x = 797,490,781,676,661,376/800,341,214.60
  6. Step 6: Final answer
    x = 996,438,477.90

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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.