Home / 1,086,400,620.80-1,629,600,931.20-396,330,387.20

Finding the Fourth Proportional to 1,086,400,620.80, 1,629,600,931.20 and 396,330,387.20

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Solution

The fourth proportional to 1,086,400,620.80, 1,629,600,931.20 and 396,330,387.20 is: 594,495,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,400,620.80 : 1,629,600,931.20 = 396,330,387.20 : x
  2. Step 2: Convert to fraction form
    1,086,400,620.80/1,629,600,931.20 = 396,330,387.20/x
  3. Step 3: Cross multiply
    1,086,400,620.80x = 1,629,600,931.20 × 396,330,387.20
  4. Step 4: Simplify right side
    1,086,400,620.80x = 645,860,368,043,976,576
  5. Step 5: Solve for x
    x = 645,860,368,043,976,576/1,086,400,620.80
  6. Step 6: Final answer
    x = 594,495,580.80

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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.